DMF_Crawler/docs/research/_raw/04-anti-bot.raw.md

RAW RESEARCH DUMP — agent-a71ac455421e9ebcc

ORIGINAL TASK PROMPT

오늘 날짜는 2026-09-02 이다. 너는 리서치 에이전트다. 반드시 먼저 ToolSearch 로 "select:WebSearch,WebFetch" 를 로드하고, WebSearch 로 최소 8회 이상 다양한 한국어/영어 질의를 던지고, 핵심 출처 페이지는 WebFetch 로 실제 열어 내용을 확인하라. 실제로 열어 확인한 항목만 verified_by_fetch=true 로 표시하라. 존재를 확인하지 못한 URL, GitHub 저장소, 논문, CLI 플래그는 절대 지어내지 말고 confidence='low' 로 표시하거나 제외하라. 한국 사이트(nedrug.mfds.go.kr, data.go.kr 등)는 WebFetch 가 실패할 수 있으니 실패하면 그 사실을 open_questions 에 적어라. 결과의 summary/detail/recommendations 는 한국어로 쓰되 고유명사·코드·플래그는 원문 유지. 코드 스니펫은 실제 동작 가능한 수준으로 구체적으로 작성하라. 최종 출력은 StructuredOutput 스키마에 맞춰라.

프로젝트 맥락: Windows 11 PC 에서 매일 06:00 에 한국 식약처 원료의약품 등록(DMF) 공고/현황을 크롤링하여 신규/변경/취하 건을 탐지하고, 탭(시트)별로 연동된 보기 좋은 xlsx 리포트를 생성한다. 크롤링·요약 일부를 AI 에이전트 CLI(Claude Code 의 'claude -p' headless 모드 등)로 non-interactive 하게 돌리고, 재부팅 후에도 자동 복구되는 서비스/스케줄러로 운영하며, 서비스가 죽으면 Windows 알림으로 복구 안내를 띄운다.

[축 4: 봇 차단(bot detection) 원리와 차단당하지 않는 방법론] 조사 항목:

1. 봇 탐지 원리: 요청 빈도/패턴, User-Agent·헤더 순서, TLS 핑거프린트(JA3/JA4), HTTP/2 핑거프린트, 헤드리스 브라우저 지문(navigator.webdriver, Canvas/WebGL, CDP 노출), 행동 분석, 캡차. Cloudflare/Akamai/Imperva/DataDome 등 주요 WAF 의 동작 방식.
2. 한국 공공기관 사이트에서 흔한 보호 방식(웹방화벽, 세션/쿠키 필수, Referer 검사, 과도 요청 시 IP 차단, JSESSIONID 등) 과 nedrug.mfds.go.kr 이 실제로 어떤 보호를 쓰는지 알려진 정보.
3. '차단당하지 않는 정중한 크롤러' 방법론: robots.txt 준수, 하루 1회·저빈도 접근, 명시적 UA(연락처 포함), 지수 백오프·지터, 조건부 요청(ETag/If-Modified-Since), 세션 재사용, 캐시, 동시성 1, 실패 시 서킷 브레이커, 시간대 분산.
4. 도구: Playwright(headless=new) + playwright-stealth/rebrowser-playwright, curl_cffi(브라우저 TLS 임퍼소네이션), undetected-chromedriver, nodriver, Camoufox — 각 도구의 현재(2026) 유지보수 상태와 적합성. 공공 게시판처럼 보호가 약한 사이트엔 requests/httpx 로 충분한지 판단 기준.
5. 법적·윤리적 경계: 한국 정보통신망법 제48조(침입), 저작권법 데이터베이스제작자 권리, 대법원 2022 야놀자-여기어때 판결, 잡코리아-사람인 판결, 미국 hiQ v. LinkedIn, 공공데이터법 및 공공누리 라이선스 — '공공 공고를 저빈도로 수집해 내부 리포트로 쓰는 것'의 리스크 평가.
6. 차단됐을 때 진단 절차(403/429/빈 응답/리다이렉트/캡차 구분)와 복구 절차. 검색어 예: "bot detection TLS fingerprint JA4 2025", "playwright stealth 2026 maintained", "curl_cffi impersonate", "크롤링 정보통신망법 판례 야놀자 여기어때", "robots.txt RFC 9309".

dimension 필드에는 "anti-bot" 를 넣어라.

[SEARCH #1] playwright stealth rebrowser-playwright maintained 2026

Web search results for query: "playwright stealth rebrowser-playwright maintained 2026"

Links: [{"title":"Playwright Stealth: Bypass Bot Detection in Python & Node.js","url":"https://scrapfly.io/blog/posts/playwright-stealth-bypass-bot-detection"},{"title":"Playwright Stealth Mode in 2026: The 7 Patches That Actually Matter - DEV Community","url":"https://dev.to/vhub_systems_ed5641f65d59/playwright-stealth-mode-in-2026-the-7-patches-that-actually-matter-46bp"},{"title":"Best Playwright Stealth 2026: Patchright vs Camoufox vs noDriver","url":"https://scrapewise.ai/blogs/playwright-stealth-2026"},{"title":"Playwright Anti-Fingerprinting Alternatives 2026: The Plugin Era Is Over - BotCloud Blog | BotCloud","url":"https://botcloud.dev/blog/playwright-anti-fingerprinting-alternatives-2026/"},{"title":"Patchright vs Rebrowser-Patches: Stealth Playwright Patches Compared 2026 - DataResearchTools","url":"https://dataresearchtools.com/patchright-vs-rebrowser-patches-stealth-playwright-patches-compared-2026/"},{"title":"Playwright Stealth Not Working in 2026: 5 Alternatives That Actually Pass Cloudflare","url":"https://humanbrowser.cloud/blog/playwright-stealth-not-working-2026"},{"title":"Playwright Stealth: What Works in 2026 and Where It Falls Short","url":"https://dicloak.com/blog-detail/playwright-stealth-what-works-in-2026-and-where-it-falls-short"}]

Based on the search results, here's what I found about playwright stealth and rebrowser-playwright maintenance status in 2026:

Playwright Stealth Maintenance Status

The Python ecosystem is stronger in 2026: playwright-stealth is actively maintained with a modern context-manager API, while the Node.js stealth stack still relies on packages that have seen little recent maintenance. More specifically, playwright-stealth v2.x is actively maintained and released v2.0.2 in April 2026.

However, as of 2026 it is in similar maintenance condition to the Node version and is being superseded by patchright, which is actively maintained.

rebrowser-playwright

rebrowser-playwright modifies the core browser engine to reduce automation signatures at a deeper level. The search results indicate that this is one of the enhanced library options available, though specific maintenance details for rebrowser-playwright itself were not prominently featured in the results.

The key takeaway is that while playwright-stealth for Python is actively maintained as of 2026, the stealth plugin approach generally is being superseded by more modern solutions like Patchright that patch at the engine/CDP layer rather than just the JavaScript layer.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #2] curl_cffi impersonate chrome TLS fingerprint python

Web search results for query: "curl_cffi impersonate chrome TLS fingerprint python"

Links: [{"title":"GitHub - luminati-io/curl_cffi-web-scraping: Use curl_cffi in Python to mimic browser TLS fingerprints for reliable and stealthy web scraping. · GitHub","url":"https://github.com/luminati-io/curl_cffi-web-scraping"},{"title":"How to use curl_cffi for web scraping in Python | ScrapingBee","url":"https://www.scrapingbee.com/blog/how-to-use-curl-cffi/"},{"title":"GitHub - lexiforest/curl_cffi: Python binding for curl-impersonate fork via cffi. A http client that can impersonate browser tls/ja3/http2 fingerprints. · GitHub","url":"https://github.com/lexiforest/curl_cffi"},{"title":"curl-cffi · PyPI","url":"https://pypi.org/project/curl-cffi/0.5.1/"},{"title":"Use Curl Impersonate to scrape as Chrome or Firefox","url":"https://scrapfly.io/blog/posts/curl-impersonate-scrape-chrome-firefox-tls-http2-fingerprint"},{"title":"Web Scraping With curl_cffi and Python in 2026","url":"https://brightdata.com/blog/web-data/web-scraping-with-curl-cffi"},{"title":"TLS Impersonation with curl_cffi: Beating JA3/JA4 Detection | ProxyHat","url":"https://proxyhat.com/blog/tls-impersonation-curl-cffi-guide"},{"title":"How to Solve TLS/JA3 Fingerprinting in Web Scraping with curl_cffi","url":"https://www.capsolver.com/blog/All/web-scraping-with-curl-cffi"}]

I've found comprehensive information about curl_cffi and TLS fingerprint impersonation. Here's what the search results show:

What is curl_cffi?

curl_cffi is a library that provides Python bindings for the curl-impersonate fork via CFFI, making it an HTTP client capable of impersonating browser TLS/JA3/HTTP2 fingerprints.

How It Works

TLS impersonation with curl_cffi is the technique of making Python's HTTP requests produce a TLS ClientHello that's byte-for-byte identical to a real browser (typically Chrome). curl_cffi uses BoringSSL, not OpenSSL, which is why it can replicate Chrome's exact cipher order, GREASE insertion, extension list, and HTTP/2 SETTINGS frame.

Chrome Impersonation

curl_cffi supports impersonating several browser versions including chrome99, chrome100, chrome101, chrome104, chrome107, chrome110, chrome116, chrome119, chrome120, chrome123, chrome124, and chrome131, with the option to use "chrome" to always impersonate the latest browser version.

Basic Usage

To use it, you pass the impersonate parameter: curl_cffi.get("https://tls.browserleaks.com/json", impersonate="chrome")

Benefits

curl_cffi is an excellent solution for bypassing anti-bot blocks based on TLS fingerprinting.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #3] bot detection TLS fingerprint JA4 HTTP/2 fingerprint 2025

Web search results for query: "bot detection TLS fingerprint JA4 HTTP/2 fingerprint 2025"

Links: [{"title":"When Handshakes Tell the Truth: Detecting Web Bad Bots via TLS Fingerprints","url":"https://arxiv.org/html/2602.09606v1"},{"title":"TLS Fingerprinting: How It Works & How to Bypass It (2025)","url":"https://www.browserless.io/blog/tls-fingerprinting-explanation-detection-and-bypassing-it-in-playwright-and-puppeteer"},{"title":"TLS Fingerprinting: The Bot Detection Method You Cannot Ignore - DEV Community","url":"https://dev.to/xavier_fok/tls-fingerprinting-the-bot-detection-method-you-cannot-ignore-504g"},{"title":"JA3/JA4 TLS Fingerprint - Detect Browser TLS/SSL Fingerprinting","url":"https://scrapfly.io/web-scraping-tools/ja3-fingerprint"},{"title":"[2602.09606] When Handshakes Tell the Truth: Detecting Web Bad Bots via TLS Fingerprints","url":"https://arxiv.org/abs/2602.09606"},{"title":"On the Internet, Nobody Knows You're an LLM Bot: Unmasking Web Agents with Multi-Layer Fingerprinting","url":"https://arxiv.org/pdf/2606.30119"}]

Based on the search results, here's what I found about bot detection using TLS fingerprints, JA4, and HTTP/2 fingerprinting in 2025:

JA4 and TLS Fingerprinting for Bot Detection

Transport Layer Security (TLS) fingerprinting is a passive network analysis technique used to identify or classify client and server software based on observable characteristics of their TLS handshakes.

JA4 is newer and addresses JA3's weaknesses by normalizing fields to handle browser randomization, adding TCP and HTTP/2 context, and producing a 36-character identifier that's harder to evade.

How JA4 Works

JA4 captures Protocol + Version + SNI + CipherCount + ExtensionCount + ALPN + Truncated SHA256(Ciphers) + Truncated SHA256(Extensions + SigAlgs).

Recent Bot Detection Research (2025-2026)

Recent academic research demonstrates the effectiveness of JA4 for bot detection. Machine learning classifiers trained on JA4 fingerprints achieved an AUC of 0.998 and an F1 score of 0.9734.

HTTP/2 Integration

HTTP/2 Integration combines JA3 with HTTP/2 SETTINGS frame fingerprinting as part of modern bot detection approaches.

Current Industry Use

TLS fingerprinting has become a standard building block in security and anti-bot pipelines, especially on the server side, with fraud and bot detection vendors combining JA3/JA4 with cookies, IP reputation, and behavioral features to spot credential stuffing, carding, and scraping.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #4] nedrug.mfds.go.kr robots.txt 크롤링

Web search results for query: "nedrug.mfds.go.kr robots.txt 크롤링"

Links: [{"title":"robots.txt - Search Console 도움말","url":"https://support.google.com/webmasters/answer/12818275?hl=ko"},{"title":"robots.txt 파일 만들기 및 제출 | Google 크롤링 인프라","url":"https://developers.google.com/crawling/docs/robots-txt/create-robots-txt"},{"title":"MFDS Drug Safety Korea - 식품의약품안전처","url":"https://nedrug.mfds.go.kr/eng/index"},{"title":"https:/nedrug.mfds.go.kr - 식품의약품안전처","url":"https://nedrug.mfds.go.kr/"},{"title":"Robots.txt - FoxData","url":"https://foxdata.com/en/glossary/robotstxt/"},{"title":"https://nedrug.mfds.go.kr/index","url":"https://nedrug.mfds.go.kr/index"},{"title":"robots.txt - 나무위키","url":"https://namu.wiki/w/robots.txt"},{"title":"Robots.txt Introduction and Guide | Google Search Central | Documentation | Google for Developers","url":"https://developers.google.com/search/docs/crawling-indexing/robots/intro"},{"title":"robots.txt 10분 안에 끝내는 총정리 가이드 | TBWA 데이터랩","url":"https://seo.tbwakorea.com/blog/robots-txt-complete-guide/"},{"title":"의약품안전나라 > HOMEPAGE - 식품의약품안전처","url":"https://nedrug.mfds.go.kr/safetyuseinfo"}]

I've performed the web search for your query. The search results provide general information about robots.txt and crawling, as well as information about the nedrug.mfds.go.kr website (which is the MFDS Drug Safety Korea website operated by South Korea's Ministry of Food and Drug Safety).

Here's what the search revealed:

About robots.txt and crawling: robots.txt is a text file that informs search engines which URLs or directories within a site should not be crawled. robots.txt is a protocol to control the access of robots like web crawlers to a website.

About nedrug.mfds.go.kr: The website at nedrug.mfds.go.kr is the official Korean drug safety database run by the MFDS (Ministry of Food and Drug Safety), which contains information on drug searches, cyber complaints, product and manufacturer information, and drug advertising searches.

However, the search results did not provide specific information about the robots.txt file or crawling policies for the nedrug.mfds.go.kr domain itself. To find that specific information, you would need to directly access the robots.txt file at https://nedrug.mfds.go.kr/robots.txt or check the website's official terms of service for their crawling guidelines.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #5] robots.txt RFC 9309 Robots Exclusion Protocol

Web search results for query: "robots.txt RFC 9309 Robots Exclusion Protocol"

Links: [{"title":"RFC 9309 - Robots Exclusion Protocol 日本語訳","url":"https://tex2e.github.io/rfc-translater/html/rfc9309.html"},{"title":"RFC 9309: Robots.txt Is Now an Official IETF Internet Standard (Robots Exclusion Protocol)","url":"https://www.searchengineworld.com/rfc9309-robots-txt-quietly-became-an-official-internet-standard"},{"title":"Robots.txt","url":"https://en.wikipedia.org/wiki/Robots.txt"},{"title":"RFC 9309 Robots Exclusion Protocol Abstract","url":"https://www.ietf.org/rfc/rfc9309.pdf"},{"title":"RFC 9309: Robots Exclusion Protocol | RFC Editor","url":"https://www.rfc-editor.org/info/rfc9309/"},{"title":"RFC 9309 - Robots Exclusion Protocol","url":"https://datatracker.ietf.org/doc/html/rfc9309"},{"title":"RFC 9309: Robots Exclusion Protocol | Guide books","url":"https://dl.acm.org/doi/10.17487/RFC9309"},{"title":"RFC 9309 — Robots Exclusion Protocol — status, mechanics & checks — AgentGrade","url":"https://agentgrade.com/standards/rfc-9309"}]

Based on the search results, here's what I found about RFC 9309 and the Robots Exclusion Protocol:

Overview

RFC 9309 specifies and extends the "Robots Exclusion Protocol" method originally defined by Martijn Koster in 1994 for service owners to control how content served by their services may be accessed, if at all, by automatic clients known as crawlers.

Standardization Timeline

Robots.txt existed as a generally agreed upon de facto convention for decades before the community formalized it through this process and published it as RFC 9309 in 2022. The Robots Exclusion Protocol (often referred to by the filename used to implement it, robots.txt) is a standard used by websites to indicate to visiting web crawlers and other web robots which portions of the website they are allowed to visit.

Key Features

RFC 9309 standardizes what robots.txt always was informally: groups addressed to User-agent tokens, Allow/Disallow rules, most-specific-match wins, and — crucially — voluntary compliance. The "Allow" and "Disallow" lines indicate whether accessing a URI that matches the corresponding path is allowed or disallowed, and the most specific match found is used.

Compliance Considerations

Crawlers should impose a parsing limit to protect their systems, which must be at least 500 kibibytes [KiB]. Additionally, the Robots Exclusion Protocol is not a substitute for valid content security measures, as listing paths in the robots.txt file exposes them publicly and thus makes the paths discoverable.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #6] 잡코리아 사람인 크롤링 판결 데이터베이스제작자 저작권법

Web search results for query: "잡코리아 사람인 크롤링 판결 데이터베이스제작자 저작권법"

Links: [{"title":"잡코리아, 사람인 저작권침해 2심서 승소 - ZDNet korea","url":"https://zdnet.co.kr/view/?no=20170412162832"},{"title":"[지재] "경쟁회사 채용정보 '무단 크롤링'해 게재하면 저작권 침해" - 리걸타임즈","url":"https://www.legaltimes.co.kr/news/articleView.html?idxno=32614"},{"title":"데이터 크롤링 보호 대상에 관한 소고* ** - 채용정보 크롤링 사례를 중심으로 - 심석찬 인하대학교 AI·데이터법센터 선임연구원","url":"https://ils.inha.ac.kr/bbs/ils/3464/99038/download.do"},{"title":""경쟁사 웹사이트 무단 크롤링은 데이터베이스권 침해" - ZDNet korea","url":"https://zdnet.co.kr/view/?no=20170927180839"},{"title":"데이터 크롤링의 한국법상 허용기준 - Copyright - South Korea","url":"https://www.mondaq.com/copyright/1266554/%EB%8D%B0%EC%9D%B4%ED%84%B0-%ED%81%AC%EB%A1%A4%EB%A7%81%EC%9D%98-%ED%95%9C%EA%B5%AD%EB%B2%95%EC%83%81-%ED%97%88%EC%9A%A9%EA%B8%B0%EC%A4%80"},{"title":"잡코리아 대리해 크롤링으로 인한 저작권침해금지 소송서 최종 승소 - 업무사례 - 업무사례 - 법무법인민후","url":"https://www.minwho.kr/kr/business/business_case_view.php?bgu=view&idx=32903"}]

웹 검색 결과를 정리하면 다음과 같습니다:

잡코리아 vs 사람인 크롤링 저작권 판결

사람인HR은 2008년 잡코리아에 등록된 기업 채용공고를 크롤링하여 자사의 사이트에 게재하였습니다. 이에 따라 법원 소송이 진행되었습니다.

1심 판결

서울중앙지법은 2011년 사람인의 크롤링을 부정경쟁행위로 판단하여 "사람인HR은 채용정보 369건을 폐기하고 잡코리아에 1건당 50만원씩 총 1억 9800만원을 지급하라"고 판결했습니다.

2심 판결 (항소심)

서울고등법원은 "사람인에이치알이 경쟁사인 잡코리아가 제공하는 채용정보를 허락없이 크롤링해 자사 영업에 이용한 것은 저작권법 제93조 1항, 2항을 위반한 행위"라면서 "이는 잡코리아의 데이터베이스제작자 권리를 침해한 것"이라고 판결했습니다.

판결의 의의

이 판결은 동의를 받지 않은 무단 크롤링이 불법이라는 점과 잡코리아와 같은 UCC 사이트도 데이터베이스제작자에 해당함을 밝힌 점에서 법적으로 큰 의미가 있습니다.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #7] 크롤링 정보통신망법 제48조 판례 야놀자 여기어때 대법원 2022

Web search results for query: "크롤링 정보통신망법 제48조 판례 야놀자 여기어때 대법원 2022"

Links: [{"title":"크롤링 관련 최근 대법원 판결과 그 시사점 2022.06.20","url":"https://www.shinkim.com/kor/media/newsletter/pdf/1843"},{"title":"[스타트업 법률 가이드] 스타트업과 데이터 크롤링","url":"https://www.newsprime.co.kr/news/article/?no=623494"},{"title":"대법원, 야놀자 정보 크롤링 한 여기어때 창업주 '무죄' - ZDNet korea","url":"https://zdnet.co.kr/view/?no=20220512180515"},{"title":"야놀자 서버에 1594만 회 접근, 정보 가져간 여기어때…무죄 이유 보니 [김진성의 판례 읽기]","url":"https://magazine.hankyung.com/business/article/202205249081b"},{"title":"이른바 ‘크롤링 프로그램’을 사용하여 경쟁회사의 모바일 어플리케이션용 API 서버에 접근하여 정보를 수집한 행위가 구 정보통신망이용촉진및정보보호등에관한법률위반(정보통신망침해등)죄, 저작권법위반죄, 컴퓨터등장애업무방해죄에 해당하는지 문제된 사안[대법원 2022. 5. 12. 선고 중요판결] - 판례속보","url":"https://scourt.go.kr/portal/news/NewsViewAction.work?pageIndex=1&searchWord=&searchOption=&seqnum=8456&gubun=4&type=0"},{"title":"1 법제지원부 김지수 주요 쟁점 경쟁사가 회원에게 제공하는 데이터베이스를 크롤링한 행위의 저작권 등 침해 여부 판시사항","url":"https://www.kcopa.or.kr/download.do?uuid=359cebb5-4de0-45bb-b64e-831136e390bf.pdf"},{"title":"대법원 2022. 5. 12. 선고 2021도1533 판결 [정보통신망이용 ...","url":"https://casenote.kr/%EB%8C%80%EB%B2%95%EC%9B%90/2021%EB%8F%841533"}]

웹 검색 결과를 정리하겠습니다:

여기어때 vs 야놀자 크롤링 사건 개요

2022년 여기어때와 야놀자 간 숙박정보 크롤링에 있어서 형사책임에 관한 대법원 판결이 선고되었습니다. 대법원 2022. 5. 12. 선고 2021도1533 판결이 해당 사건입니다.

사건 내용

심 전 대표 등은 2016년 6~10월 경쟁업체 야놀자의 전산 서버에 1천594만여회 이상 접속해 제휴 숙박업소 목록, 입·퇴실 시간, 주소·가격 정보, 할인금액 등 정보를 수집한 혐의로 2019년 3월 재판에 넘겨졌습니다.

판결 결과

대법원 2부는 정보통신망법상 정보통신망침해, 컴퓨터등업무방해 및 저작권법 위반 혐의로 기소된 여기어때 창업주 심명섭 전 위드이노베이션 대표 등의 상고심에서 상고를 기각하고 무죄를 선고한 원심을 확정했습니다. 재판부는 여기어때 측이 크롤링을 통해 확보한 야놀자 정보 대부분이 이용자에게 공개된 것으로 보고, 심 전 대표 등에게 무죄를 선고했습니다.

법적 기준

정보통신망법 제48조 제1항에 따른 접근권한의 유무 또는 범위는 서비스제공자가 부여한 접근권한을 기준으로 판단해야 하며, 서비스제공자가 접근권한을 제한하고 있는지 여부는 보호조치나 이용약관 등 객관적으로 드러난 여러 사정을 종합적으로 고려하여야 합니다.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #8] hiQ v. LinkedIn Ninth Circuit 2022 CFAA scraping ruling settlement

Web search results for query: "hiQ v. LinkedIn Ninth Circuit 2022 CFAA scraping ruling settlement"

Links: [{"title":"hiQ v. LinkedIn Wrapped Up: Web Scraping Lessons Learned","url":"https://www.zwillgen.com/alternative-data/hiq-v-linkedin-wrapped-up-web-scraping-lessons-learned/"},{"title":"HiQ Labs v. LinkedIn","url":"https://en.wikipedia.org/wiki/HiQ_Labs_v._LinkedIn"},{"title":"Web scraping case law: HiQ v. LinkedIn","url":"https://blog.apify.com/hiq-v-linkedin/"},{"title":"HiQ Labs Scrapes by Again: The Ninth Circuit Reaffirms that Data-Scraping Does Not Violate the CFAA | Fenwick","url":"https://www.fenwick.com/insights/publications/hiq-labs-scrapes-by-again-the-ninth-circuit-reaffirms-that-data-scraping-does-not-violate-the-cfaa-1"},{"title":"LinkedIn's Data Scraping Battle with hiQ Labs Ends with Proposed Judgment | Privacy World","url":"https://www.privacyworld.blog/2022/12/linkedins-data-scraping-battle-with-hiq-labs-ends-with-proposed-judgment/"},{"title":"LinkedIn v. hiQ: Landmark Data Scraping Suit Provides Guidance to Data Scrapers and Web Operators – Tech & Sourcing @ Morgan Lewis","url":"https://www.morganlewis.com/blogs/sourcingatmorganlewis/2022/12/linkedin-v-hiq-landmark-data-scraping-suit-provides-guidance-to-data-scrapers-and-web-operators"},{"title":"Ninth Circuit Holds Data Scraping is Legal in hiQ v. LinkedIn - California Lawyers Association","url":"https://calawyers.org/privacy-law/ninth-circuit-holds-data-scraping-is-legal-in-hiq-v-linkedin/"},{"title":"What Recent Rulings in ‘hiQ v. LinkedIn’ and Other Cases Say About the Legality of Data Scraping","url":"https://www.fbm.com/publications/what-recent-rulings-in-hiq-v-linkedin-and-other-cases-say-about-the-legality-of-data-scraping/"},{"title":"hiQ and LinkedIn Reach Settlement in Landmark Scraping Case | New Media and Technology Law Blog","url":"https://newmedialaw.proskauer.com/2022/12/08/hiq-and-linkedin-reach-proposed-settlement-in-landmark-scraping-case/"}]

Based on the search results, here's a comprehensive overview of the hiQ v. LinkedIn case:

Ninth Circuit Ruling (2022)

In April 2022 the Ninth Circuit affirmed its decision, finding that the automated capture of data from the publicly accessible pages of websites (that do not require the creation of an account for access) does not violate the CFAA's prohibition on accessing a computer "without authorization." More specifically, the Ninth Circuit found that on a publicly available website, there are no rules or access permissions to prevent access, and therefore accessing that publicly available data cannot violate the CFAA.

Settlement Agreement (December 2022)

Despite the favorable Ninth Circuit ruling for hiQ, the case ultimately ended with a settlement. Around December 6, 2022, the parties reached a private settlement, and hiQ agreed to a permanent injunction requiring it to cease web scraping and to delete all source code, data, and algorithms created and obtained in its efforts to scrape LinkedIn in violation of the site's user agreement.

Following LinkedIn's November 2022 win, on December 7, 2022, the parties agreed to a stipulation that calls for a $500,000 judgment to be entered against hiQ for (1) a breach of contract based on LinkedIn's user agreement; (2) a violation of the Computer Fraud and Abuse Act (CFAA) "based on hiQ's data collection practices and based on hiQ's direct access to password-protected pages on LinkedIn's platforms using fake accounts."

Key Takeaway

While the stipulation is not considered a finding of fact by the court and therefore has no precedential value, the various decisions leading up to this point show that, under certain circumstances, data scraping publicly available websites is legal under the Computer Fraud and Abuse Act (CFAA) but may create liability risk under a breach of contract claim or even common law torts claims.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[FETCH #1] https://nedrug.mfds.go.kr/robots.txt

ASK: Return the full raw contents of this robots.txt file verbatim, including all User-agent, Disallow, Allow, Crawl-delay, Sitemap lines. If it's an HTML page instead of robots.txt, say so and describe what it is.

robots.txt File Contents

This is a robots.txt file (not an HTML page). Here are the full raw contents:

User-agent: *
Disallow: /

Summary: This robots.txt configuration blocks all web crawlers from accessing any part of the website by disallowing the entire root directory with the "/" path.

[SEARCH #9] nodriver Camoufox undetected-chromedriver maintenance status 2026 archived

Web search results for query: "nodriver Camoufox undetected-chromedriver maintenance status 2026 archived"

Links: [{"title":"GitHub - daijro/camoufox: 🦊 Anti-detect browser","url":"https://github.com/daijro/camoufox"},{"title":"Best Stealth Browsers for Web Scraping in 2026","url":"https://scrapfly.io/blog/posts/best-stealth-browsers"},{"title":"How to Bypass Cloudflare When Web Scraping in 2026","url":"https://scrapfly.io/blog/posts/how-to-bypass-cloudflare-anti-scraping"},{"title":"Best Undetected ChromeDriver Alternatives for 2026 - ZenRows","url":"https://www.zenrows.com/blog/undetected-chromedriver-alternatives"},{"title":"undetected_chromedriver: Guide to Avoid Detection Online","url":"https://decodo.com/blog/undetected-chromedriver"},{"title":"Stealth browsers 2026: nodriver, Camoufox, Patchright","url":"https://proxycove.com/en/blog/stealth-browsers-2026-nodriver-camoufox-patchright-benchmark"},{"title":"The 6 best Patchright alternatives in 2026","url":"https://roundproxies.com/blog/best-patchright-alternatives/"},{"title":"AI Browser Automation in 2026: Camoufox, Nodriver & Stealth MCP | PROXIES.SX","url":"https://www.proxies.sx/blog/ai-browser-automation-camoufox-nodriver-2026"}]

Based on the search results, here's what I found regarding the maintenance status of these tools in 2026:

Camoufox

As of 2026, there has been a year gap in maintenance due to a personal situation. However, as of August 13, 2026, the project has 11,057 stars with the last push on August 12, 2026, indicating the project is alive and updated. Camoufox is currently under active development.

Nodriver

Nodriver is the official successor to undetected-chromedriver, built by the same author, and is a complete rewrite that is fully async with zero Selenium dependency. It is under active development to counter new detection methods.

Undetected-chromedriver

Nodriver replaces undetected-chromedriver. The maintainers deprecated puppeteer-stealth in Feb 2025 and it doesn't bypass current Cloudflare versions. While Undetected ChromeDriver was once reliable, its limitations made it unsuitable for large-scale web scraping.

In summary, nodriver appears to be the actively maintained successor, Camoufox is experiencing a revival after maintenance gaps, and undetected-chromedriver has been effectively superseded by nodriver.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #10] Cloudflare bot management how it works headless browser detection navigator.webdriver CDP Runtime.enable

Web search results for query: "Cloudflare bot management how it works headless browser detection navigator.webdriver CDP Runtime.enable"

Links: [{"title":"How to Bypass Cloudflare When Web Scraping in 2026","url":"https://scrapfly.io/blog/posts/how-to-bypass-cloudflare-anti-scraping"},{"title":"How to Bypass Cloudflare when Scraping: The 8 Best Methods · Zenrows","url":"https://www.zenrows.com/blog/bypass-cloudflare"},{"title":"How to ByPass Cloudflare Challenges using Selenium | BrowserStack","url":"https://www.browserstack.com/guide/selenium-cloudflare"},{"title":"Advanced Evasion Techniques and Architecture Analysis of Cloudflare Bot Management Systems in 2026 | by Ayush Aggarwal | Medium","url":"https://medium.com/@ayushaggarwal42003/advanced-evasion-techniques-and-architecture-analysis-of-cloudflare-bot-management-systems-in-2026-1b4ba7cc3b22"},{"title":"Cloudflare Scraper: How to Bypass Cloudflare With ScrapingBee API | ScrapingBee","url":"https://www.scrapingbee.com/blog/how-to-bypass-cloudflare-antibot-protection-at-scale/"},{"title":"How to Bypass Cloudflare in 2026: Tools, Code & Tactics","url":"https://www.webscrapingapi.com/how-to-bypass-cloudflare"},{"title":"Bot detection engines · Cloudflare bot solutions docs","url":"https://developers.cloudflare.com/bots/concepts/bot-detection-engines/"},{"title":"Headless Browser Detection Methods: Browser Isolation Guide (2026) - Sendwin","url":"https://blog.send.win/headless-browser-detection-methods-browser-isolation-guide-2026/"},{"title":"Bypass Cloudflare Bot Protection: No Headless Browser | webclaw","url":"https://webclaw.io/blog/bypass-cloudflare-bot-protection-web-scraping"},{"title":"undetected geckodriver","url":"https://pypi.org/project/undetected-geckodriver"}]

Based on the search results, here's how Cloudflare bot management detects headless browsers and automation:

Detection Methods

Cloudflare's JavaScript Detections (JSD) engine identifies headless browsers and other malicious fingerprints. The system uses multiple detection approaches:

navigator.webdriver Property: The most common leak in standard headless browsers is navigator.webdriver set to true, a direct automation flag. When a browser is controlled by WebDriver (Selenium, Playwright, or Puppeteer via CDP), this flag is automatically set to true.

Chrome DevTools Protocol (CDP) Detection: Cloudflare detects standard Selenium and Playwright browsers through the navigator.webdriver property and Chrome DevTools Protocol signatures. More specifically, Cloudflare detects the proxy objects used for variable overwrites and identifies the presence of the Chrome DevTools Protocol (CDP) communicating in the background.

Multi-Layered Analysis: Modern anti-bot platforms deploy multi-layered detection that combines JavaScript environment analysis, hardware fingerprinting, network profiling, and behavioral biometrics. Cloudflare analyzes navigation patterns, request timing, mouse movements, and scroll behavior—real users do not request 100 pages in two seconds.

Dynamic Updates: Cloudflare pushes detection updates continuously rather than on a fixed schedule, with major fingerprint-detection changes appearing every few weeks while ML model retraining happens more frequently.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #11] 공공데이터법 공공누리 크롤링 공공기관 웹사이트 데이터 수집 허용

Web search results for query: "공공데이터법 공공누리 크롤링 공공기관 웹사이트 데이터 수집 허용"

Links: [{"title":"[김경환 변호사의 IT법]<30>공개데이터 크롤링, 합법과 불법의 경계는?","url":"https://v.daum.net/v/EyCb0hoKc4"},{"title":"공공데이터 이용정책","url":"https://www.data.go.kr/ugs/selectPortalPolicyView.do"},{"title":"공공데이터 제공 < 공공데이터 < 정보공개 : 법제처","url":"https://www.moleg.go.kr/menu.es?mid=a10203010000"},{"title":"법령 > 본문 > 공공데이터의 제공 및 이용 활성화에 관한 법률 | 국가법령정보센터","url":"https://www.law.go.kr/lsInfoP.do?lsId=011895&ancYnChk=0"},{"title":"Korea Open Government License","url":"https://en.wikipedia.org/wiki/Korea_Open_Government_License"},{"title":"데이터 크롤링의 한국법상 허용기준 - Copyright - South Korea","url":"https://www.mondaq.com/copyright/1266554/%EB%8D%B0%EC%9D%B4%ED%84%B0-%ED%81%AC%EB%A1%A4%EB%A7%81%EC%9D%98-%ED%95%9C%EA%B5%AD%EB%B2%95%EC%83%81-%ED%97%88%EC%9A%A9%EA%B8%B0%EC%A4%80"},{"title":"데이터 크롤링 보호 대상에 관한 소고* ** - 채용정보 크롤링 사례를 중심으로 - 심석찬 인하대학교 AI·데이터법센터 선임연구원","url":"https://ils.inha.ac.kr/bbs/ils/3464/99038/download.do"}]

웹 검색 결과를 정리하면 다음과 같습니다:

공공데이터 크롤링 관련 핵심 내용

공공데이터 이용 정책: 공공데이터포털을 통해 제공 중인 공공데이터는 별도의 신청절차 없이 이용 가능하며, 제공되는 공공데이터의 목록은 각 공공기관의 홈페이지에서도 확인 가능합니다.

공공누리 라이선스: 저작물이 포함된 공공데이터를 제공하는 경우에는 저작권법 등 관련 법령에 따른 공공누리 유형을 부착하도록 합니다.

크롤링 허용의 복잡성: 공공데이터법 등이 데이터 공유를 강화하는 법률이며, 공공데이터의 경우 공유를 강화하는 체계가 갖춰져 있습니다. 다만, 한국법상 크롤링의 허용범위에 대한 기준도 명확히 정립되어 있지 않습니다.

데이터 수집의 법적 문제: 웹상에 공개된 데이터를 수집하는 경우 저작권법상 데이터베이스제작자의 권리 침해 및 부정경쟁방지법에서 규정하는 성과도용행위에 해당할 수 있습니다.

결론적으로 공공데이터는 공식 포털을 통해 이용 가능하지만, 직접 크롤링하는 경우에는 법적 제약이 있을 수 있으므로 주의가 필요합니다.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #12] 공공기관 홈페이지 웹방화벽 크롤링 차단 JSESSIONID Referer 과도한 접속 IP 차단

Web search results for query: "공공기관 홈페이지 웹방화벽 크롤링 차단 JSESSIONID Referer 과도한 접속 IP 차단"

Links: [{"title":"세션 관련 보안 문제 질문 - 인프런 | 커뮤니티 질문&답변","url":"https://www.inflearn.com/community/questions/554285/%EC%84%B8%EC%85%98-%EA%B4%80%EB%A0%A8-%EB%B3%B4%EC%95%88-%EB%AC%B8%EC%A0%9C-%EC%A7%88%EB%AC%B8"},{"title":"행정.공공기관 웹사이트 관리개선 추진계획 | 행정안전부>","url":"https://www.mois.go.kr/frt/bbs/type001/commonSelectBoardArticle.do;jsessionid=DY-IMiMKOI-itDmjGdN2SBzv.node10?bbsId=BBSMSTR_000000000015&nttId=68005"},{"title":"웹사이트 액세스 허용 또는 차단하기 - Chrome Enterprise and Education 고객센터","url":"https://support.google.com/chrome/a/answer/7532419?hl=ko"},{"title":"스프링 시큐리티의 Session Fixation 공격 방어와 JSESSIONID 전달 방식 직접 살펴보기","url":"https://velog.io/@bflykky/%EC%8A%A4%ED%94%84%EB%A7%81-%EC%8B%9C%ED%81%90%EB%A6%AC%ED%8B%B0%EC%9D%98-Session-Fixation-%EA%B3%B5%EA%B2%A9-%EB%B0%A9%EC%96%B4%EC%99%80-JSESSIONID-%EC%A0%84%EB%8B%AC-%EB%B0%A9%EC%8B%9D-%EC%A7%81%EC%A0%91-%EC%82%B4%ED%8E%B4%EB%B3%B4%EA%B8%B0"},{"title":"[개념정리] 웹에서의 인증","url":"https://velog.io/@flaxinger/%EA%B0%9C%EB%85%90%EC%A0%95%EB%A6%AC-%EC%9B%B9%EC%97%90%EC%84%9C%EC%9D%98-%EC%9D%B8%EC%A6%9D"},{"title":"[WEB] JSESSIONID - SW Developer","url":"https://wonyong-jang.github.io/web/2020/05/10/Web-Jsessionid.html"},{"title":"크롤링을 막는 방법","url":"https://velog.io/@commicat/%ED%81%AC%EB%A1%A4%EB%A7%81%EC%9D%84-%EB%A7%89%EB%8A%94-%EB%B0%A9%EB%B2%95"},{"title":"스크래핑 방지와 크롤링 방지 | 제로 트러스트 웹 보안 가이드","url":"https://drminside.com/en/tech-insight/crawling-safe"},{"title":""5 principles of bypassing blocks revealed by a web scraping expert" | Hash scraper technology blog","url":"https://blog.hashscraper.com/5-principles-for-bypassing-web-crawling-blocks/"},{"title":"community.adobe.com","url":"https://community.adobe.com/t5/coldfusion-discussions/jsessionid-changing-on-every-click-refresh-form-submit-etc/m-p/9416065/highlight/true"}]

검색 결과를 기반으로 귀하의 쿼리와 관련된 정보를 제공하겠습니다.

공공기관 웹방화벽과 크롤링 차단

JSESSIONID와 세션 관리: JSESSIONID는 민감한 정보를 서버에 보관하고 이와 매칭되는 키를 생성하여 클라이언트에게 주는 방식이며, 클라이언트는 JSESSIONID를 요청 header에 담아서 보냅니다.

크롤링 차단 방법: 방문 횟수/속도를 감지한 후 과도한 요청 IP를 차단하는 방식이 사용됩니다. User-Agent 검사를 통해 jsoup, curl, python, bot과 같은 크롤링 도구를 차단하고, 특정 IP를 차단 리스트에 추가할 수 있습니다.

Referer 헤더의 역할: 웹방화벽은 Referer 헤더를 검사하여 요청의 출처를 확인하고, 정상적인 브라우저 요청인지 자동화된 크롤링 요청인지를 판별할 수 있습니다.

공공기관 홈페이지는 이러한 보안 메커니즘을 통해 과도한 크롤링 접근으로부터 서버를 보호합니다.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #13] polite web crawler exponential backoff jitter If-Modified-Since ETag Retry-After 429 best practices

Web search results for query: "polite web crawler exponential backoff jitter If-Modified-Since ETag Retry-After 429 best practices"

Links: [{"title":"Firecrawl - The context API to search, scrape, and interact with the web at scale. 🔥","url":"https://www.firecrawl.dev/glossary/web-crawling-apis/what-is-polite-crawling"},{"title":"Requests at Scale — Exponential Backoff with Jitter (with examples!) | by Tito Adeoye | Medium","url":"https://medium.com/@titoadeoye/requests-at-scale-exponential-backoff-with-jitter-with-examples-4d0521891923"},{"title":"Design a Web Crawler | Hello Interview System Design in a Hurry","url":"https://www.hellointerview.com/learn/system-design/problem-breakdowns/web-crawler"},{"title":"Respecting robots.txt and Crawl-Delay: Ethical Scraping That Still Scales","url":"https://evomi.com/blog/respecting-robots.txt-and-crawl-delay-ethical-scraping-that-still-scales"},{"title":"How to Overcome Rate Limiting in Web Scraping [Complete Guide 2026]","url":"https://www.scrapehero.com/rate-limiting-in-web-scraping/"},{"title":"Guide to Distributed Web Crawling: Scale Your Scraping","url":"https://brightdata.com/blog/web-data/distributed-web-crawling"},{"title":"Dealing with Rate Limiting Using Exponential Backoff","url":"https://substack.thewebscraping.club/p/rate-limit-scraping-exponential-backoff"},{"title":"Mastering Webhook Retry Logic: Strategies and Best ...","url":"https://sparkco.ai/blog/mastering-webhook-retry-logic-strategies-and-best-practices"},{"title":"Designing a Web Crawler at Scale - Page 3 of 6 | OneNoughtOne","url":"https://www.onenoughtone.com/learn/web-crawler/3"}]

Based on the search results, here's a comprehensive overview of polite web crawler best practices with exponential backoff, jitter, and HTTP header handling:

Exponential Backoff and Jitter

Exponential backoff is a common retry strategy where every time a request fails, you wait twice as long before trying again. However, when everyone's retry schedule is synchronized, it just makes the stampede happen at longer intervals.

Jitter is a small, randomly selected delay added to each retry attempt to prevent multiple HTTP clients from retrying simultaneously. Pure exponential backoff is recognized by sophisticated bot-detection systems, but adding random jitter breaks this fingerprint.

Using exponential backoff with jitter keeps things safe, spreads out retries, and gives your backend a chance to recover.

HTTP Status Codes and Response Headers

Adaptive backoff should respond to 429 and 5xx status codes. Polite crawlers increase their delay when problems persist, often using exponential backoff. After five straight server errors or timeouts, pause crawling for several hours.

General Politeness Guidelines

Set a minimum delay of 0.1 seconds between requests, even for large sites, and set a maximum delay of 2 minutes to keep your crawler from stalling indefinitely. Per-host pacing is what lets a crawler be both polite and fast, and keeps it running long after the impatient ones get banned.

Include contact information in your crawler's user-agent string so admins can reach you.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #14] Akamai Bot Manager DataDome Imperva detection signals behavioral analysis how they work

Web search results for query: "Akamai Bot Manager DataDome Imperva detection signals behavioral analysis how they work"

Links: [{"title":"Bypass Anti-Bot Protection - Cloudflare, Akamai, DataDome and More | Scrapfly","url":"https://scrapfly.io/bypass"},{"title":"Akamai Bot Manager Reviews, Competitors and Pricing","url":"https://www.peerspot.com/products/akamai-bot-manager-reviews"},{"title":"Best Bot Management Solutions for 2025–2026 | Fastly","url":"https://www.fastly.com/blog/best-bot-management-solutions-2025-2026"},{"title":"The Hidden Fingerprints of Bot Protection: How Every Major Vendor Leaves Traces in Your Browser | by Dima Kynal | Medium","url":"https://medium.com/@dimakynal/the-hidden-fingerprints-of-bot-protection-how-every-major-vendor-leaves-traces-in-your-browser-ae951e355606"},{"title":"Akamai Bot Manager Review & Alternatives - ITT Systems","url":"https://www.ittsystems.com/akamai-bot-manager-review-alternatives/"},{"title":"Akamai Bot Manager Review and Best Alternatives for %%currentyear%%","url":"https://www.comparitech.com/net-admin/akamai-bot-manager-review/"},{"title":"Akamai (Bot Manager)","url":"https://decodo.com/glossary/akamai"},{"title":"Best Bot Detection Software | 2026 Verified Rankings","url":"https://gitnux.org/best/bot-detection-software/"},{"title":"Anti-Bot Detection in 2026: How Modern AI Scrapers Stay Under the Radar | KnowledgeSDK Blog","url":"https://knowledgesdk.com/blog/anti-bot-detection-guide"}]

Based on the search results, here's how these bot detection systems work:

Detection Signals and Behavioral Analysis

Modern anti-bot systems inspect TLS fingerprints (JA3/JA4), HTTP/2 SETTINGS frames, Canvas and WebGL outputs, Navigator properties, and behavioral timing signals.

Akamai Bot Manager

Akamai uses advanced fingerprinting, behavioral analysis, and anomaly detection, making it well-suited for enterprises needing deep integration within its ecosystem. It's known for detecting headless browsers even when they've patched the obvious fingerprints, using network-level analysis and behavioral ML.

DataDome

DataDome positions itself as a real-time bot protection layer with sub-millisecond response times. DataDome takes a different approach: ML-first, real-time classification. It integrates via a JavaScript tag and a server-side SDK. DataDome's model analyzes request patterns across the entire protected network, making it effective at detecting distributed scraping even when individual requests look legitimate.

Imperva

Imperva uses the power of machine learning to collect and analyze data about bots and their behavior. It continuously learns from patterns to pinpoint anomalies in traffic. Its bot protection system analyzes mouse movement patterns, keystroke dynamics, and interaction sequences. Additionally, Imperva analyzes more than 200 device attributes to effectively identify bad bots. These fingerprints stick to each bot, so they can be identified even when they connect from random IP addresses, use peer-to-peer networks, or anonymous proxies.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[FETCH #2] https://arxiv.org/abs/2602.09606

ASK: Summarize the paper: authors, date, dataset, which TLS fingerprint (JA3/JA4) was used, main results (AUC, F1), and key findings about how bots differ from browsers in TLS handshakes. Also note any limitations mentioned.

Paper Summary: TLS Fingerprinting for Bot Detection

Authors & Date: Ghalia Jarad and Kemal Bicakci (submitted February 10, 2026)

Dataset: JA4DB (real TLS fingerprints)

TLS Fingerprint Method: JA4 technique was employed for this research.

Main Results:

• CatBoost classifier achieved superior performance with an AUC of 0.998 and F1 score of 0.9734
• Test set accuracy reached 0.9863
• XGBoost showed comparable results

Key Findings on Bot-Browser Differences: The research identified specific TLS handshake parameters that distinguish bots from legitimate users. The most influential features were "ja4_b, cipher_count, and ext_count" components, suggesting bots exhibit distinct patterns in their cipher suite selections and extension configurations during the TLS handshake.

Limitations Noted: The authors acknowledge their method requires extension to new protocols such as HTTP/3 and recommend incorporating additional device-fingerprinting features to better resist sophisticated bot evasion techniques. The current work focuses specifically on TLS-level detection without addressing emerging protocol standards.

[FETCH #3] https://github.com/lexiforest/curl_cffi

ASK: Extract: latest version number and release date visible, list of supported impersonate targets (chrome versions, safari, firefox, edge), install command, usage example with impersonate parameter, stars count, last commit date, and whether it supports HTTP/2 fingerprint impersonation and asyncio.

curl_cffi Project Summary

Version & Release Information

The latest version visible on the GitHub page doesn't display a specific version number or release date in the provided content. However, the project indicates "Python 3.10 is the minimum supported version since v0.14."

Supported Impersonate Targets

The library supports impersonating:

• Chrome (multiple versions, e.g., chrome124, chrome135)
• Safari
• Safari iOS
• Firefox
• Edge
• Custom fingerprints via ja3/akamai parameters

Current fingerprint count: "37" preset fingerprints with additional free and pro options available.

Installation

pip install curl_cffi --upgrade

Usage Example

import curl_cffi
r = curl_cffi.get("https://tls.browserleaks.com/json", impersonate="chrome")
print(r.json())

Key Metrics

• Stars: 6.4k
• Forks: 546
• Last Commit: 569 total commits on main branch
• Open Issues: 38
• Pull Requests: 34

Technical Capabilities

✅ HTTP/2 fingerprint impersonation: Supported ✅ Asyncio support: Fully supported with AsyncSession ✅ HTTP/3 support: Available since v0.11.4 ✅ WebSocket support: Both synchronous and asynchronous

The project describes itself as "the most popular Python binding for curl" with performance comparable to aiohttp and pycurl.

[FETCH #4] https://www.shinkim.com/kor/media/newsletter/pdf/1843

ASK: 이 문서(크롤링 관련 최근 대법원 판결과 그 시사점)의 핵심 내용을 정리해줘: 대법원 2021도1533 판결의 사실관계, 정보통신망법 제48조 제1항 접근권한 판단 기준, 저작권법 데이터베이스제작자 권리 침해 판단 기준(상당한 부분 복제, 통상적 이용과 충돌), 컴퓨터등장애업무방해죄 판단, 그리고 실무 시사점.

대법원 2021도1533 판결 분석: 크롤링과 법적 경계

사실관계

피고인이 웹사이트에 접근하여 데이터를 자동으로 수집한 사건입니다. 정보통신망법 위반, 저작권법 침해, 컴퓨터 시스템 장애 야기 혐의가 제기되었습니다.

접근권한 판단 기준 (정보통신망법 제48조)

대법원은 실질적 접근 가능성을 기준으로 판단했습니다. "기술적 보호조치 우회 여부, 이용약관 위반, 시스템 부하 정도" 등을 종합 고려하여 '승인되지 않은 접근'인지 판단합니다.

저작권법상 데이터베이스 권리 침해

침해 판단은 두 가지 요소를 봅니다:

• 상당한 부분 복제: 양과 질적 중요성 검토
• 통상적 이용과의 충돌: 데이터베이스 제작자의 정당한 이익 침해 여부

컴퓨터 장애 야기죄 판단

"실제 시스템 부하나 기능 저해 발생"이 필수 요건입니다. 단순한 불편이 아닌 객관적 장애를 입증해야 합니다.

실무 시사점

• 크롤링 시 이용약관과 robots.txt 준수 필수
• 시스템 부하 최소화(속도 조절, 시간대 분산)
• 비상업적 목적이라도 법적 안전성 보장 안 됨
• 법적 조언 사전 검토 권장

[Binary content (application/pdf, 189.9KB) also saved to C:\Users\encep.claude\projects\D--workspace-DMF-Crawler\c00474d0-f118-4917-817d-1c16591aefc7\tool-results\webfetch-1788353809737-s6vaqp.pdf]

[FETCH #5] https://www.rfc-editor.org/rfc/rfc9309.html

ASK: Extract key normative rules: how User-agent group matching works (case-insensitive, product token), Allow/Disallow longest-match precedence, what to do when robots.txt returns 4xx (unavailable) vs 5xx (unreachable), caching duration (24 hours), the 500 KiB parsing limit, and whether Crawl-delay is part of the standard.

RFC 9309 Key Normative Rules

User-Agent Group Matching: Crawlers must use "case-insensitive matching" to find applicable groups. The product token can only contain letters, underscores, and hyphens. When multiple groups match the same user-agent, "the matching groups' rules MUST be combined into one group." If no explicit match exists, crawlers follow the wildcard group (*), if present.

Allow/Disallow Precedence: "The most specific match found MUST be used. The most specific match is the match that has the most octets." When an allow and disallow rule are equivalent, the allow rule takes precedence.

HTTP 4xx Response (Unavailable): When servers return 400-499 status codes, "the crawler MAY access any resources on the server," effectively treating robots.txt as absent.

HTTP 5xx Response (Unreachable): On server errors (500-599), "the crawler MUST assume complete disallow." However, after approximately 30 days of unavailability, crawlers may treat it as unavailable or use cached versions.

Caching Duration: "Crawlers SHOULD NOT use the cached version for more than 24 hours, unless the robots.txt file is unreachable."

Parsing Limit: "The parsing limit MUST be at least 500 kibibytes."

Crawl-Delay: Crawl-delay is not part of RFC 9309's normative specification—only allow, disallow, and user-agent directives are defined.

[CMD] cd "C:/Users/encep/AppData/Local/Temp/claude/D--workspace-DMF-Crawler/c00474d0-f118-4917-817d-1c16591aefc7/scratchpad" && echo "=== robots.txt ===" && curl -s -D - -A "DMF-Research-Check/0.1 (+mailto:yunchanpaca@gmail.com)" --max-time 20 "https://nedrug.mfds.go.kr/robots.txt" | head -40 && echo && e

…[truncated 415 chars]

=== robots.txt ===
HTTP/1.1 200 OK

Date: Wed, 02 Sep 2026 12:57:24 GMT

Server: Apache

Allow: GET, POST, OPTIONS

Strict-Transport-Security: max-age=63072000

Expires: 0

Cache-Control: max-age=3600

Access-Control-Allow-Headers: Origin, Content-Type, content-type, Content-Style-Type, Accept, Authorization,DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,If-Modified-Since, x-requested-with, Content-Security-Policy, X-UA-Compatible, X-Content-Type-Options, X-FRAME-OPTIONS, Cache-Control, Pragma

X-XSS-Protection: 1; mode=block

Pragma: 

Accept-Ranges: bytes

Access-Control-Allow-Origin: *.mfds.go.kr

Last-Modified: Thu, 07 Aug 2025 07:44:40 GMT

Strict-Transport-Security: max-age=31536000 ; includeSubDomains

X-Content-Type-Options: nosniff

Content-Length: 26

Access-Control-Allow-Methods: GET, POST, OPTIONS

Set-Cookie: key=value; SameSite=Lax;Secure;;HttpOnly;Secure

Set-Cookie: JSESSIONID=stogIf1qms8gvtsm0oOsDket8hhkTRa9ijaj5YLV.ext21; path=/; secure; HttpOnly; Max-Age=14400; Expires=Wed, 02-Sep-2026 16:57:24 GMT;HttpOnly;Secure

Content-Type: text/plain; charset=UTF-8



User-agent: *

Disallow: /
=== index HEAD (headers only) ===
HTTP/1.1 200 OK

Date: Wed, 02 Sep 2026 12:57:24 GMT

Server: Apache

Allow: GET, POST, OPTIONS

Strict-Transport-Security: max-age=63072000

Expires: 0

Cache-Control: no-cache, no-store, max-age=0, must-revalidate

Access-Control-Allow-Headers: Origin, Content-Type, content-type, Content-Style-Type, Accept, Authorization,DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,If-Modified-Since, x-requested-with, Content-Security-Policy, X-UA-Compatible, X-Content-Type-Options, X-FRAME-OPTIONS, Cache-Control, Pragma

X-XSS-Protection: 1; mode=block

Pragma: no-cache

Access-Control-Allow-Origin: *.mfds.go.kr

Strict-Transport-Security: max-age=31536000 ; includeSubDomains

X-Content-Type-Options: nosniff

Content-Language: ko-KR

Access-Control-Allow-Methods: GET, POST, OPTIONS

Set-Cookie: key=value; SameSite=Lax;Secure;;HttpOnly;Secure

Set-Cookie: JSESSIONID=k7Y6_4LAfUcIcUJhxImuscJ3F_FN4Cz_YBEiHnOa.ext31; path=/; secure; HttpOnly; Max-Age=14400; Expires=Wed, 02-Sep-2026 16:57:24 GMT;HttpOnly;Secure

Set-Cookie: elevisor_for_j2ee_uid=5kqk2d6z9wbzq; path=/; Max-Age=31536000; Expires=Thu, 02-Sep-2027 12:57:24 GMT;HttpOnly;Secure

Transfer-Encoding: chunked

Content-Type: text/html;charset=UTF-8




=== TLS info ===
http_version=1.1 ssl_verify=0 remote_ip=116.67.90.161 time_total=0.101132

[FETCH #6] https://github.com/rebrowser/rebrowser-patches

ASK: Extract: what the project does (which CDP leaks it patches, e.g. Runtime.enable, sourceURL, utilityWorld), latest release/last commit date visible, stars, whether README says it's maintained or deprecated, and supported playwright/puppeteer versions. Also note the companion packages rebrowser-playwright and rebrowser-puppeteer.

rebrowser-patches Project Summary

What It Does

This project patches Puppeteer and Playwright to prevent automation detection. Key CDP leaks addressed include:

1. Runtime.Enable leak - The primary fix, with three configurable modes (addBinding, alwaysIsolated, enableDisable)
2. SourceURL masking - Changes //# sourceURL=pptr:... to generic names like app.js
3. Utility world naming - Customizable via REBROWSER_PATCHES_UTILITY_WORLD_NAME
4. Browser CDP access - Adds _connection() method to Browser class

Project Status

• Stars: 1.4k
• Latest Puppeteer version tested: 24.8.1 (released 2025-05-06)
• Latest Playwright version tested: 1.52.0 (released 2025-04-17)
• Status: Actively maintained with regular updates

Companion Packages

The project offers drop-in replacement packages:

• NPM: rebrowser-puppeteer, rebrowser-puppeteer-core, rebrowser-playwright, rebrowser-playwright-core
• PyPI: rebrowser-playwright (Python)

These pre-patched versions allow easy adoption without manual patching steps.

Key Feature

As stated in documentation: "All major anti-bot software such as Cloudflare, DataDome, and others" rely on detecting the Runtime.Enable CDP command, making this patch critical for undetectable automation.

[FETCH #7] https://github.com/Kaliiiiiiiiii-Vinyzu/patchright

ASK: Extract: what patchright patches (Runtime.enable leak, Console.enable leak, command flags, utility world, closed shadow roots), install command for python (patchright), recommended launch arguments (channel chrome, headless False, no_viewport), stars, last commit date visible, and any note that it is a drop-in replacement for playwright.

Patchright: Undetected Playwright Fork

Overview

Patchright is described as "a patched and undetected version of the Playwright Testing and Automation Framework" that functions as a drop-in replacement for standard Playwright.

Key Patches Implemented

Runtime.enable Leak: Patchright avoids using the Runtime.enable method by executing JavaScript in isolated ExecutionContexts instead, addressing what the documentation calls "the biggest Patch Patchright uses."

Console.enable Leak: The library disables the Console API entirely to prevent detection through this vulnerability.

Command Flags Leaks: The tool modifies Playwright's default arguments, notably adding --disable-blink-features=AutomationControlled and removing --enable-automation to evade navigator.webdriver detection.

Closed Shadow Roots: Patchright enables interaction with elements in closed shadow roots using standard locators and XPath support.

Installation & Configuration

Installation occurs through language-specific packages (Python, Node.js, .NET). The documentation notes these are separate repositories from the driver itself.

Recommended launch arguments mentioned include using channel Chrome, setting headless to False, and disabling viewport constraints—though specific command syntax isn't detailed in this excerpt.

Repository Statistics

The project has 4.2k stars and 204 forks on GitHub. The visible commit history shows 1,020 commits on the main branch.

Important Limitations

The tool only supports Chromium-based browsers; Firefox and WebKit are explicitly not supported.

[FETCH #8] https://github.com/ultrafunkamsterdam/nodriver

ASK: Extract: description, whether it is successor to undetected-chromedriver, install command, minimal usage example, stars, latest commit/release date visible, and whether README mentions maintenance status or headless support.

nodriver Repository Analysis

Description: An async web scraping and browser automation library for Python offering an easy interface. It provides direct communication with Chrome for better WAF resistance and performance compared to Selenium-based alternatives.

Successor Status: Yes. The README explicitly states: "This is the official successor of the Undetected-Chromedriver python package."

Installation Command:

pip install nodriver

Minimal Usage Example:

import nodriver as uc

async def main():
    browser = await uc.start()
    page = await browser.get('https://www.nowsecure.nl')
    # further code...

if __name__ == '__main__':
    uc.loop().run_until_complete(main())

Stars: 4.7k stars

Latest Activity: The repository shows 166 total commits on the main branch, though specific commit/release dates are not visible in the provided content.

Maintenance & Headless Support:

• The README confirms headless support is available as a configuration option
• No explicit maintenance status statement is mentioned in the visible content
• Recent version (0.50.1) shows active development with protocol rewrites and new features

[FETCH #9] https://github.com/daijro/camoufox

ASK: Extract: description (Firefox-based anti-detect browser), what it patches at C++ level, install command for python (camoufox), usage example, stars, last commit date visible, any maintenance notice or note about the author being away, and whether there is a v2/beta branch.

Camoufox: Anti-Detect Browser Summary

Description

Camoufox is "an open source anti-detect browser built for webscraping & AI agents." It's a Firefox fork engineered for automation while remaining undetectable to anti-bot systems.

C++ Level Patches

The browser intercepts and spoofs data at the C++ implementation level rather than through JavaScript injection, making changes undetectable. Key patches include:

• Navigator properties and device fingerprinting
• WebGL parameters and shader precision
• WebRTC IP spoofing at protocol level
• Screen, window, and viewport properties
• Geolocation and timezone spoofing
• Font fingerprinting prevention

Python Installation

pip install camoufox

Usage Example

from camoufox.sync_api import Camoufox

with Camoufox() as browser:
    page = browser.new_page()
    page.goto("https://example.com")

Repository Statistics

• Stars: 11.6k
• Forks: 987
• Last Commit: 681 commits on main branch
• Current Branch: main (no v2/beta branch visible)

Maintenance Notice

⚠️ Warning states: "There has been a year gap in maintenance due to a personal situation. Camoufox is currently under active development." The project is noted as being "under development" and may not be suitable for stable production use.

[FETCH #10] https://github.com/ultrafunkamsterdam/undetected-chromedriver

ASK: Extract: stars, last commit date visible, any notice in README about deprecation, being superseded by nodriver, or maintenance status; latest release version.

undetected-chromedriver Repository Status

Stars: 12.8k

Latest Release Version: 3.5.0

Last Commit: The page shows "331 Commits" on the master branch but does not display a specific commit date.

Deprecation/Maintenance Notice: No deprecation warning or notice about being superseded by nodriver appears in the README. The project appears actively maintained, with recent version updates documented (3.5.0 addresses Selenium 4.10 compatibility).

Key Status Indicator: The README explicitly states "still passing strong" in section 3.1.6, and version 3.5.0 notes indicate "Selenium 4.10 caused some issues. 3.5.0 is compatible and has selenium 4.9 or above pinned," suggesting ongoing active maintenance and compatibility updates.

[FETCH #11] https://developers.cloudflare.com/bots/concepts/bot-detection-engines/

ASK: List every detection engine described (heuristics, machine learning, anomaly detection, JavaScript detections, verified bots, etc.) with one-line explanation each, and any details on what signals they use (e.g., JA3/JA4, HTTP headers, browser challenges).

Cloudflare Bot Detection Engines

Based on the documentation, here are the detection engines described:

1. Heuristics: "Processes all requests" and matches traffic against "a growing database of malicious fingerprints."

2. JavaScript Detections (JSD): Identifies headless browsers through lightweight, invisible client-side JavaScript injection. Operates without collecting personally identifiable information.

3. Machine Learning (ML): Available for Business and Enterprise plans. Uses supervised learning on billions of daily requests to generate Bot Scores (1–99) based on "headers, session characteristics, and browser signals."

4. Anomaly Detection (AD): Enterprise-only (deprecated). Employed unsupervised learning by establishing traffic baselines to identify statistical outliers. User agent-agnostic approach.

Additional Detection Mechanisms

The documentation also mentions the __cf_bm cookie, which "smooths out the bot score and reduce[s] false positives" by tracking individual user request patterns.

Note: The page does not describe verified bots, JA3/JA4 fingerprinting, or HTTP header-specific signals—only the general categories above appear in this source material.

[FETCH #12] https://scourt.go.kr/portal/news/NewsViewAction.work?pageIndex=1&searchWord=&searchOption=&seqnum=8456&gubun=4&type=0

ASK: 대법원 2022. 5. 12. 선고 2021도1533 판결 판례속보 내용을 그대로 정리해줘: 사안의 개요, 판시사항(정보통신망법 제48조 접근권한 판단기준, 저작권법 데이터베이스제작자 권리 침해 판단기준, 컴퓨터등장애업무방해죄), 판결 결과.

대법원 2022. 5. 12. 선고 2021도1533 판결 정리

사안의 개요

크롤링 프로그램을 통해 법원 공시사항과 API를 무단으로 수집·활용한 피고인이 정보통신망법, 저작권법, 컴퓨터장애업무방해죄 등으로 기소된 사건입니다.

판시사항

1. 정보통신망법 제48조 접근권한 판단기준 정보통신망 이용촉진 및 정보보호 등에 관한 법률 제48조의 '불법적 접근'은 사용자의 허락 없이 타인 정보에 접근하는 행위로, 시스템 관리자만이 인정할 수 있습니다. 제3자가 데이터 수집 목적으로 접근하면, 기술적 보호조치 우회와 무관하게 위법입니다.

2. 저작권법 데이터베이스제작자 권리 데이터베이스제작자의 권리 침해는 실질적 손해뿐 아니라 "데이터베이스의 일부를 이용하여 저작권"에 미치지 않는 행위도 포함됩니다. 체계적 수집으로 구성 가치를 훼손하면 침해됩니다.

3. 컴퓨터장애업무방해죄 정상적 운영을 방해하려는 고의 행위에 해당합니다.

판결 결과

특정 범죄 구성을 인정하며 처벌을 명합니다.

[FETCH #13] https://www.legaltimes.co.kr/news/articleView.html?idxno=32614

ASK: 잡코리아 대 사람인 크롤링 사건의 판결 내용을 정리해줘: 법원명과 선고일, 사건번호(있으면), 저작권법 제93조 데이터베이스제작자 권리 침해 판단 이유, 손해배상액, 크롤링 방식(자동 프로그램, 횟수), 판결 확정 여부.

잡코리아 vs 사람인 크롤링 사건 판결 정리

법원명 및 선고일 서울고등법원 민사4부, 2017년 4월 6일 선고

사건번호 항소심 2016나2019365

저작권법 제93조 데이터베이스제작자 권리 침해 판단 재판부는 "피고는 별도의 마케팅비용 없이 반복적, 체계적으로 원고 데이터베이스의 채용정보를 복제"했으며, 이로 인해 "저작권법 93조 2항, 1항에서 정하고 있는 원고의 데이터베이스 제작자의 권리가 침해되었다"고 판단했습니다.

손해배상액

• 저작권 침해 손해배상: 2억 5,000만원
• 조정조서 부작위의무 위반에 따른 간접강제금: 2억원 (400건 × 50만원/건)

크롤링 방식 자동화된 크롤러를 통해 HTML 소스를 기계적으로 복제하여 별도 서버에 저장한 후 게재

판결 확정 여부 문서에서 최종 확정 여부는 명시되지 않음

[FETCH #14] https://en.wikipedia.org/wiki/HiQ_Labs_v._LinkedIn

ASK: Summarize: timeline (2017 injunction, 2019 9th Cir, 2021 SCOTUS vacate/remand after Van Buren, 2022 9th Cir reaffirm, Nov 2022 district court ruling on breach of contract, Dec 2022 settlement/consent judgment), the key holding about CFAA and public websites, and the final outcome (hiQ ceased scraping, $500,000). Include citation numbers.

hiQ Labs v. LinkedIn Case Timeline & Summary

Timeline

2017: District court granted hiQ's preliminary injunction against LinkedIn (273 F. Supp. 3d 1099, N.D. Cal. 2017)

September 9, 2019: Ninth Circuit affirmed the injunction (938 F.3d 985), ruling that hiQ could scrape publicly available LinkedIn profile data

June 14, 2021: Supreme Court vacated the Ninth Circuit decision based on Van Buren v. United States, which narrowed CFAA's "exceeds authorized access" language to apply only when someone has valid system access but reaches unauthorized portions

April 18, 2022: Ninth Circuit reaffirmed its original decision on remand (31 F.4th 1180)

November 2022: District court ruled hiQ had breached LinkedIn's User Agreement

December 2022: Settlement reached between parties

Key Legal Holding

The Ninth Circuit determined that the CFAA's prohibition on accessing computers "without authorization" did not apply to scraping publicly visible data, even after receiving a cease-and-desist notice. The court found that "public interest favored the granting of a preliminary injunction."

Final Outcome

Following the district court's November 2022 determination regarding contract breach, the parties settled their dispute, effectively ending hiQ's data-scraping operation against LinkedIn.

[FETCH #15] https://www.kogl.or.kr/info/license.do

ASK: 공공누리(KOGL) 제1유형~제4유형의 이용조건을 각각 정리하고, 출처표시 의무, 상업적 이용 가능 여부, 변경 가능 여부를 표로 요약해줘. 페이지가 열리지 않으면 그렇다고 말해줘.

공공누리 유형별 이용조건 요약

페이지가 정상적으로 열렸습니다. 다음은 제1~4유형의 이용조건을 정리한 표입니다.

유형	출처표시	상업적 이용	변경 가능
제1유형	필수	가능	가능
제2유형	필수	불가능	가능
제3유형	필수	가능	불가능
제4유형	필수	불가능	불가능

출처표시 의무사항

"본 저작물은 'OOO(기관명)'에서 'OO년'작성하여 공공누리 제O유형으로 개방한 '저작물명(작성자:OOO)'을 이용하였으며"로 명시해야 합니다. 온라인의 경우 출처 웹사이트 하이퍼링크를 제공하는 것이 권장됩니다.

주요 제한사항

• 제2, 4유형: "비영리 목적으로만 이용 가능"하며, 별도 허락으로 상업 이용 가능
• 제3, 4유형: "저작물을 변경 혹은 2차 저작물 작성금지"

[FETCH #16] https://www.data.go.kr/ugs/selectPortalPolicyView.do

ASK: 공공데이터포털 이용정책 내용을 정리해줘: 공공데이터 이용 시 신청 절차, 공공누리 적용, 상업적 이용 가능 여부, 이용자 준수사항(과도한 트래픽 유발 금지 등), 크롤링/자동수집 관련 언급이 있으면 원문 그대로 인용해줘. 페이지가 열리지 않으면 그렇다고 말해줘.

공공데이터포털 이용정책 요약

1. 이용 신청 절차

공공데이터포털을 통해 제공 중인 데이터는 "별도의 신청절차 없이 이용 가능"합니다. 미제공 데이터의 경우 제공신청을 통해 요청할 수 있으나, 공공데이터법 제17조의 제외대상 정보가 포함되면 거부될 수 있습니다.

2. 공공누리 적용

저작물이 포함된 공공데이터는 공공누리 유형(0~4유형, AI유형)을 부착하여 이용허락 범위를 표시합니다. 각 유형별로 출처표시, 상업적 이용 가능 여부, 2차 저작물 작성 가능 여부가 다릅니다.

3. 상업적 이용

공공누리 유형에 따라 다릅니다. 제0, 1, 3, AI유형은 상업적 이용 가능하며, 제2, 4유형은 비상업적 이용만 가능합니다.

4. 크롤링/자동수집 관련

페이지에 명시적인 크롤링 금지 규정은 없으나, 오픈 API 방식 데이터의 경우 제공기관은 "특정 회원의 이용형태로 인해 제공기관의 업무에 지장을 초래하거나 제공시스템의 성능 저하 등의 문제가 발생할 경우 서비스 이용을 제한할 수 있습니다."

5. 이용자 준수사항

과도한 트래픽 유발에 관한 구체적 언급은 없으나, 제공기관은 시스템 성능 저하 시 이용 제한 권한을 보유합니다.

[FETCH #17] https://arxiv.org/abs/2606.30119

ASK: Summarize this paper: title, authors, date, what "LLM web agents" it studied (e.g., browser-use, OpenAI Operator, Claude computer use), which fingerprinting layers (network/TLS, browser, behavioral) were used, detection accuracy, and key takeaways for anyone running AI-agent-driven browsing.

Paper Summary: Unmasking LLM Web Agents

Title: "On the Internet, Nobody Knows You're an LLM Bot: Unmasking Web Agents with Multi-Layer Fingerprinting"

Authors: Iliana Fayolle, Sihem Bouhenniche, Samuel Pélissier, Pierre Laperdrix, Clémentine Maurice, Walter Rudametkin

Date: Submitted June 29, 2026

---

Key Findings

Agents Studied: The paper evaluated "six LLM-based Web Agents" but doesn't explicitly name which specific tools (like browser-use, OpenAI Operator, or Claude computer use) were examined in the provided abstract.

Fingerprinting Layers: The researchers deployed multi-layer detection across three domains:

• Network/HTTP level fingerprinting
• Browser-level fingerprinting
• Behavioral analysis (behavioral layer implied through honeysites)

Detection Accuracy: The abstract indicates "all evaluated Web Agents can be distinguished both from humans and from one another" using these techniques, though specific accuracy metrics aren't provided in the excerpt.

---

Key Takeaways for AI Agent Users

1. Stealth techniques backfire: "Stealth and anti-detection mechanisms often increase detectability rather than decrease it"

2. Multi-vector exposure: Agents leak identifying signals across network, HTTP, and browser layers simultaneously—fixing one layer won't prevent detection

3. No universal bypass: While "some Web Agents were able to bypass all evaluated anti-bot mechanisms," comprehensive detection is feasible through fingerprinting

[SEARCH #15] 식약처 원료의약품 등록 DMF 공공데이터 API data.go.kr 의약품안전나라 오픈API

Web search results for query: "식약처 원료의약품 등록 DMF 공공데이터 API data.go.kr 의약품안전나라 오픈API"

Links: [{"title":"식품의약품안전처_원료의약품등록(DMF)현황 | 공공데이터포털","url":"https://www.data.go.kr/data/15057075/openapi.do"},{"title":"의약품안전나라 > 의약품등 정보 > 의약품 및 화장품 품목정보 > 원료의약품등록(DMF) 정보","url":"https://nedrug.mfds.go.kr/bbs/117"},{"title":"식품의약품안전처_의약품 낱알식별 정보 | 공공데이터포털","url":"https://www.data.go.kr/data/15057639/openapi.do"},{"title":"공공데이터 목록 및 이용안내 - 식의약 데이터 포털","url":"https://data.mfds.go.kr/cntnts/20"},{"title":"식품의약품안전처_의약품개요정보(e약은요) | 공공데이터포털","url":"https://www.data.go.kr/data/15075057/openapi.do"},{"title":"식품의약품안전처 식품의약품안전평가원_식품의약품안전처 연구관리 기술 분류 정보조회 서비스 | 공공데이터포털","url":"https://www.data.go.kr/data/15068423/openapi.do"},{"title":"식의약 데이터 포털","url":"https://data.mfds.go.kr/"},{"title":"의약품안전나라 > 공공데이터 정보 > 공공데이터 > 개요","url":"https://nedrug.mfds.go.kr/cntnts/80"},{"title":"공공데이터 상세 < 공공데이터 < 외부포털 - 식품의약품안전처","url":"https://data.mfds.go.kr/OPCAA01F01/search?selectedTab=tab1&taskDivsCd=3&taskDivsDtlCd=7&rchSrvcKorNm=&btnSearch="},{"title":"Drug Master File","url":"https://en.wikipedia.org/wiki/Drug_Master_File"}]

검색 결과를 정리하면 다음과 같습니다:

원료의약품 등록(DMF) OpenAPI

식품의약품안전처 「원료의약품등록(DMF)현황」 OpenAPI는 등록된 원료의약품(DMF)의 현황을 조회할 수 있는 공공데이터입니다.

제공 정보

주요 제공항목에는 등록번호, 성분명, 업체명, 제조소명, 제조소 소재지, 제조국가명, 발급일자 등이 포함되어 있어 특정 원료의약품이 어떤 성분으로 되어 있는지, 어떤 업체와 제조소에서 생산되었는지, 언제 등록되었는지를 객관적으로 확인할 수 있습니다.

활용 방법

제약사 및 연구자 등은 DMF 현황 파악으로 제품 개발 시 원료 사용 가능성 및 원료 제공처 파악 등에 활용할 수 있습니다.

데이터 접근

식약처의 공공데이터는 '공공데이터포털(data.go.kr)' 및 '식의약데이터포털'(data.mfds.go.kr) 등을 통해 신청가능하며, 비용은 원칙적으로 무료입니다.

해당 OpenAPI는 data.go.kr의 데이터셋 ID 15057075에서 확인할 수 있습니다.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #16] Chrome new headless mode "headless=new" detection HeadlessChrome user agent navigator.webdriver 2025

Web search results for query: "Chrome new headless mode "headless=new" detection HeadlessChrome user agent navigator.webdriver 2025"

Links: [{"title":"Dive Into Headless Chrome: Your Key to Efficient Web Development - DEV Community","url":"https://dev.to/testmuai/dive-into-headless-chrome-your-key-to-efficient-web-development-30g0"},{"title":"What Is a Headless Browser? Headless Chrome Guide","url":"https://webscraping.ai/blog/headless-browser-guide"},{"title":"How Sites Detect Headless Browsers (And How to Evade Each Signal) — 2026 Guide - DEV Community","url":"https://dev.to/vhub_systems_ed5641f65d59/how-sites-detect-headless-browsers-and-how-to-evade-each-signal-2026-guide-2jj0"},{"title":"Making Chrome Headless Undetectable","url":"https://intoli.com/blog/making-chrome-headless-undetectable/"},{"title":"Dive Into Headless Chrome: Your Key to Efficient Web Development | TestMu AI (Formerly LambdaTest)","url":"https://www.testmuai.com/blog/headless-chrome/"},{"title":"How to detect (modified, headless) Chrome instrumented with Selenium (2024 edition)","url":"https://deviceandbrowserinfo.com/learning_zone/articles/detecting-headless-chrome-selenium-2024"},{"title":"How to detect (modified, headless) Chrome instrumented with Puppeteer (2024 edition)","url":"https://deviceandbrowserinfo.com/learning_zone/articles/detecting-headless-chrome-puppeteer-2024"},{"title":"Headless Mode | ultrafunkamsterdam/undetected-chromedriver | DeepWiki","url":"https://deepwiki.com/ultrafunkamsterdam/undetected-chromedriver/4.3-headless-mode"},{"title":"Detecting headless mode not working correctly for (new) headless chromium 133 (when using printToPdf)","url":"https://gitlab.com/behat-chrome/chrome-mink-driver/-/issues/164"}]

Based on the search results, here's what I found about Chrome's new headless mode ("headless=new") detection:

Key Detection Methods

Chrome headless sets navigator.webdriver = true by default. This is one of the most obvious signals for detection.

User Agent Detection

Headless Chrome userAgent strings typically include the word "Headless" and may also mention the Chrome version, for example HeadlessChrome/XXX.0.0.0. However, Chrome headless used to include "HeadlessChrome" in the UA string, and now it doesn't, but other UA anomalies remain.

Detection Techniques

Multiple methods can identify headless Chrome:

1. Using the user agent HTTP headers or with navigator.userAgent in JS to detect user agents linked to Headless Chrome
2. Chrome headless sets navigator.webdriver = true by default
3. Detecting the presence of the HeadlessChrome substring in the sec-ch-ua header

Evasion Techniques

The navigator.webdriver = true property can be removed by using the chrome_options.add_argument("--disable-blink-features=AutomationControlled") argument when creating the Selenium Chrome instance.

The search results show that while these detection methods are effective for casual detection, anti-bot vendors watch signals below the JavaScript layer and update weekly, making comprehensive evasion more challenging.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #17] 국내 공공기관 웹방화벽 WAPPLES 펜타시큐리티 점유율 크롤러 차단 정책 봇 차단

Web search results for query: "국내 공공기관 웹방화벽 WAPPLES 펜타시큐리티 점유율 크롤러 차단 정책 봇 차단"

Links: [{"title":"[펜타 뉴스레터 2월호] 펜타시큐리티, 웹방화벽 시장 점유율 1위","url":"https://www.pentasecurity.co.kr/news-letter/newsletter-202002/"},{"title":"아시아 태평양 점유율 1위 웹방화벽 WAPPLES | 펜타시큐리티","url":"https://www.pentasecurity.co.kr/wapples/"},{"title":"[뉴스레터 9월호] WAPPLES, 16년 연속 국내 웹방화벽 시장점유율 1위","url":"https://www.pentasecurity.co.kr/news-letter/202409/"},{"title":"펜타시큐리티, '와플' 나라장터 웹방화벽 점유율 100% 달성","url":"https://www.pentasecurity.co.kr/press-release/%ED%8E%9C%ED%83%80%EC%8B%9C%ED%81%90%EB%A6%AC%ED%8B%B0-%EC%99%80%ED%94%8C-%EB%82%98%EB%9D%BC%EC%9E%A5%ED%84%B0-%EC%9B%B9%EB%B0%A9%ED%99%94%EB%B2%BD-%EC%A0%90%EC%9C%A0%EC%9C%A8-100-%EB%8B%AC/"},{"title":"WAAP 웹방화벽 '와플' 14년 연속 국내 시장 1위 < 사람·기업 < 기사본문 - 정보통신신문","url":"https://www.koit.co.kr/news/articleView.html?idxno=99803"},{"title":"WAPPLES SA for Cloud | 클라우드 웹방화벽 | 펜타시큐리티","url":"https://www.pentasecurity.co.kr/wapples-sa-for-cloud/"},{"title":"펜타시큐리티, WAAP 웹방화벽 '와플' 14년 연속 국내 시장 1위 - 데일리시큐","url":"https://www.dailysecu.com/news/articleView.html?idxno=138183"},{"title":"자주 묻는 질문(FAQ) | 펜타시큐리티","url":"https://www.pentasecurity.co.kr/faq/"}]

검색 결과를 정리하면 다음과 같습니다:

국내 공공기관 웹방화벽 시장

WAPPLES는 16년 연속 국내 웹방화벽 시장점유율 1위를 기록하고 있습니다. 2008년부터 2025년까지 나라장터 기준 평균 점유율 56%를 기록하며 한국 WAF 시장 1위의 위치에 있습니다.

특히 WAPPLES가 2023년 8월 나라장터 조달 점유율 100%를 기록했으며, WAPPLES는 2006년 출시 이후 현재까지 국내 공공기관, 민간기업, 교육기관, 금융기관 등에 누적 판매 6,300대 이상을 기록했습니다.

크롤러 및 봇 차단 기능

WAPPLES는 고도화된 악성 봇 탐지 및 악성 트래픽 차단 기능을 제공하며, 20년 업력의 웹 공격 기술 노하우를 바탕으로 한 이상 탐지 기술을 지원합니다. WAPPLES SA for Cloud는 기존 웹방화벽의 기능 뿐만 아니라 웹보안에 필요한 API 보안, Bot 완화, DoS 방어 등의 기능도 수행합니다.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #18] Cloudflare error 1020 1015 1010 access denied rate limited how to tell 403 vs 429 vs challenge cf-mitigated header

Web search results for query: "Cloudflare error 1020 1015 1010 access denied rate limited how to tell 403 vs 429 vs challenge cf-mitigated header"

Links: [{"title":"What is Error 1015 (Cloudflare) and How to Fix it?","url":"https://scrapfly.io/blog/posts/what-is-cloudflare-1015-error-and-how-to-fix-it"},{"title":"How to Fix Cloudflare Blocking: Errors 1020, 1015 and More","url":"https://www.itechguides.com/how-to-fix-cloudflare-blocking/"},{"title":"Cloudflare Error 1020: What It Means and How to Fix It","url":"https://marsproxies.com/blog/cloudflare-error-1020/"},{"title":"Cloudflare Error 1015: How to Fix Rate Limited | Unknown Proxies","url":"https://unknownproxies.com/blog/error-codes/cloudflare-error-1015-you-are-being-rate-limited"},{"title":"Cloudflare Error 1015: How to Fix "You Are Being Rate Limited" - Blog - IPOASIS","url":"https://www.ipoasis.com/blog/cloudflare-error-1015-how-to-fix-you-are-being-rate-limited"},{"title":"Cloudflare Error Codes Explained: 1015, 1020 | SpyderProxy","url":"https://spyderproxy.com/blog/cloudflare-error-codes-explained"},{"title":"Cloudflare Error 1020 Access Denied: Fix Guide — NSLSolver","url":"https://nslsolver.com/blog/cloudflare-1020-access-denied"},{"title":"what is error 1015 cloudflare and how to fix it 46cl","url":"https://dev.to/scrapfly/what-is-error-1015-cloudflare-and-how-to-fix-it-46cl"}]

Based on the search results, here's what you need to know about distinguishing between Cloudflare errors and HTTP status codes:

Distinguishing Between Error Types

Error Format: Cloudflare 1xxx errors normally appear in the page content, while a regular 403, 429, or 530 is an HTTP response status.

Specific Error Meanings

Error 1015 - Rate Limiting: Error 1015 specifically indicates rate limiting, and occurs when a user exceeds the number of requests allowed by a website within a specific time frame.

Error 1020 - Access Denied: Error 1020 means access was denied by Cloudflare security checks, such as firewall rules, IP reputation, or bot detection.

Error 1010 - Browser Integrity Check: Error 1010 specifically means your browser signature (TLS, HTTP/2, or JS fingerprint) was flagged. It's the error you see when you try to scrape with default Python requests, plain Puppeteer, or unpatched Selenium.

HTTP 429 vs Error 1015: Error 1015 is a Cloudflare-specific rate-limiting page, while HTTP 429 ("Too Many Requests") is a standard status code that any server can return.

HTTP 403 vs Error 1020: In some cases, Cloudflare may respond with a generic 403 Forbidden response instead of displaying the error 1020 page. This usually happens when using an HTTP client, scripts, or automated tools.

Quick Diagnosis Guide

If you see 1015, start with pacing and concurrency. If you see a plain rate-limit response instead of a Cloudflare-branded page, read the guide to HTTP 429 Too Many Requests. If you see 1020, start with firewall-rule signals, IP reputation, and request profile. If the response is a general forbidden status instead of a Cloudflare-branded page, read the guide to HTTP 403 Forbidden.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[FETCH #18] https://zdnet.co.kr/view/?no=20220512180515

ASK: 기사 내용을 정리해줘: 대법원 판결 결과(무죄 확정 여부), 크롤링 접속 횟수, 재판부가 무죄로 본 이유(공개된 정보, 접근권한, 데이터베이스제작자 권리 침해 부정 이유, 서버 장애 여부), 사건번호.

대법원 여기어때 크롤링 사건 판결 정리

판결 결과

무죄 확정. 대법원이 상고를 기각하며 2심의 무죄 판결을 최종 확정했습니다.

크롤링 접속 횟수

"2016년 6~10월 경쟁업체 야놀자의 전산 서버에 1천594만여회 이상 접속"

재판부가 무죄로 본 이유

공개된 정보: 재판부는 "여기어때 측이 크롤링을 통해 확보한 야놀자 정보 대부분이 이용자에게 공개된 것"으로 판단했습니다.

데이터베이스 권리 침해: "이미 잘 알려진 정보로, 데이터베이스의 통상적인 이용을 방해하거나 회사 이익을 부당하게 해친 경우에 해당하지 않는다"고 평가했습니다.

사건번호

기사에는 사건번호가 명시되지 않았습니다.

참고: 1심에서는 유죄(징역 1년 2개월 집행유예 2년), 2심에서 무죄로 판단이 뒤집혔습니다.

[FETCH #19] https://www.data.go.kr/data/15057075/openapi.do

ASK: 이 오픈API 상세 페이지의 내용을 정리해줘: 서비스명, 제공기관, 갱신주기(업데이트 주기), 제공 항목(출력 필드명), 요청 파라미터, 엔드포인트 URL, 인증키 방식, 일일 트래픽 제한, 공공누리 유형/이용허락범위, 최근 수정일. 페이지가 열리지 않거나 로그인 필요라면 그렇다고 말해줘.

식품의약품안전처 원료의약품등록(DMF)현황 API 정보

서비스명: 식품의약품안전처_원료의약품등록(DMF)현황

제공기관: 식품의약품안전처

갱신주기: 명시되지 않음

제공 항목(출력 필드):

• 등록번호 (DMF_PERMIT_NO)
• 성분명 (INGR_KOR_NAME)
• 업체명 (ENTP_NAME)
• 제조소명 (MNFCTR_NAME)
• 제조소 소재지 (MNFCTR_PLACE)
• 제조국가명 (MANUF_COUNTRY_CODE_NM)
• 발급일자 (DMF_PERMIT_DATE)

요청 파라미터:

• 업체명, 성분명 (선택)
• 페이지 번호, 결과 수 (선택)
• 서비스키 (필수)
• 데이터포맷 (선택, 기본값 xml)

엔드포인트 URL: https://apis.data.go.kr/1471000/MdcDmfInfoService01/getMdcDmfList01

인증키 방식: URL Encode된 공공데이터포털 발급 인증키

일일 트래픽 제한: 개발계정 10,000회 / 운영계정 증설 가능

공공누리 유형/이용허락범위: "이용허락범위 제한 없음"

최근 수정일: 2025-09-19

[FETCH #20] https://casenote.kr/대법원/2021도1533

ASK: 판결문 본문에서 다음을 원문 인용 위주로 정리해줘. (1) 정보통신망법 제48조 제1항 '정당한 접근권한 없이' 판단 기준에 관한 법리 (서비스제공자가 부여한 접근권한, 보호조치·이용약관 등 객관적 사정, 로그인 등 확인절차, 공개된 정보 여부). (2) 저작권법 제93조 데이터베이스제작자 권리 침해 기준 ('상당한 부분' 판단, 개별 소재 반복적·체계적 복제, 통상적 이용과 충돌 여부, 투자에 대한 이익 침해). (3) 컴퓨터등장애업무방해죄 판단. (4) 최종 결론(상고기각·무죄 확정 여부). 페이지가 열리지 않으면 그렇다고 말해줘.

대법원 2021도1533 판결 정리

(1) 정보통신망법 제48조 - 접근권한 판단 기준

기본 법리: "서비스제공자로부터 권한을 부여받은 이용자가 아닌 제3자가 정보통신망에 접속한 경우 그에게 접근권한이 있는지 여부는 서비스제공자가 부여한 접근권한을 기준으로 판단하여야 한다"

판단 방법: "정보통신망에 대하여 서비스제공자가 접근권한을 제한하고 있는지 여부는 보호조치나 이용약관 등 객관적으로 드러난 여러 사정을 종합적으로 고려하여 신중하게 판단하여야 한다"

판결부의 구체적 판단:

• API 서버 URL·명령구문은 일반인도 기술조작으로 알아낼 수 있는 정보
• 일반 이용자는 회원가입 후·없이 자유롭게 접근 가능
• 접근을 막는 별도의 보호조치 없음
• 이용약관의 정보 이용제한은 접근제한이 아님

(2) 저작권법 제93조 - 데이터베이스 권리 침해 기준

상당한 부분 판단: "양적으로 상당한 부분인지 여부는 복제 등이 된 부분을 전체 데이터베이스의 규모와 비교하여 판단하여야 하며, 질적으로 상당한 부분인지 여부는 데이터베이스제작자가 그 복제 등이 된 부분의 제작 또는 그 소재의 갱신·검증 또는 보충에 인적 또는 물적으로 상당한 투자를 하였는지를 기준으로 제반 사정에 비추어 판단"

반복적·체계적 복제: "데이터베이스의 개별 소재 또는 상당한 부분에 이르지 못하는 부분의 반복적이거나 특정한 목적을 위한 체계적 복제 등에 의한 데이터베이스제작자의 권리 침해는 데이터베이스의 개별 소재 또는 상당하지 않은 부분에 대한 반복적이고 체계적인 복제 등으로 결국 상당한 부분의 복제 등을 한 것과 같은 결과를 발생하게 한 경우에 한하여 인정"

(3) 컴퓨터등장애업무방해죄

성립 요건: "위 죄가 성립하기 위해서는 위와 같은 가해행위 결과 정보처리장치가 그 사용목적에 부합하는 기능을 하지 못하거나 사용목적과 다른 기능을 하는 등 정보처리에 장애가 현실적으로 발생하여야 한다"

본건: 원심에서 증거만으로는 부정한 명령 입력 및 장애 발생을 인정하기 어렵다 판단

(4) 최종 결론

상고 기각 → 원심 무죄 확정

세 가지 공소사실(정보통신망법 위반, 저작권법 위반, 컴퓨터등장애업무방해죄) 모두 무죄

[FETCH #21] https://developers.cloudflare.com/cloudflare-challenges/reference/detecting-a-challenge-page-response/

ASK: Extract exactly how a client can detect a Cloudflare challenge page response: the HTTP status code used, the cf-mitigated header and its value, and any other indicators. Quote verbatim.

The server returned HTTP 404 Not Found.

The response body was not retrieved. If this URL requires authentication, use an authenticated tool (e.g. gh for GitHub, or an MCP-provided fetch tool) instead of WebFetch.

[FETCH #22] https://nedrug.mfds.go.kr/bbs/117

ASK: 이 페이지가 무엇인지 설명해줘: 게시판 제목(원료의약품등록(DMF) 정보 등), 게시글 목록 형식(제목, 등록일, 조회수), 페이지네이션 방식(GET 쿼리 파라미터인지 POST 폼인지, 파라미터 이름), 검색 폼 필드 이름, 첨부파일 형식(xlsx/hwp/pdf), 최근 게시글 제목 3개, 그리고 로그인/캡차 요구 여부. 페이지가 열리지 않으면 그렇다고 말해줘.

의약품안전나라 - DMF 등록 공고 페이지 분석

페이지 설명

이는 식품의약품안전처의 공식 의약품통합정보시스템 내 "원료의약품등록(DMF) 정보" 게시판입니다.

게시판 정보

• 제목: "원료의약품등록(DMF) 정보"
• 목록 형식: 연번, 제목, 조회건수, 등록자, 등록일자
• 총 게시글: 710건

페이지네이션

• 방식: GET 쿼리 파라미터 (페이지 번호 클릭 링크 형태)
• 표시: 10개 페이지 번호 노출 + 처음/이전/다음/마지막 버튼
• 페이지당 항목: 10/20/30/40/50개 선택 가능

검색 기능

• 통합검색 입력창 있음 (구체적 파라미터명 미표시)
• 검색 초기화 버튼 제공

최근 게시글 3개 제목

1. "등록대상 원료의약품(DMF) 등록 공고(2021년 2월 1,2주차...)"
2. "등록대상 원료의약품(DMF) 등록 공고(2021년 1월 4주차...)"
3. "등록대상 원료의약품(DMF) 등록 공고(2021년 1월 3주차...)"

첨부파일 형식

명시되지 않음

접근 제한

로그인/캡차 요구 없음 (공개 열람 가능)

[FETCH #23] https://developers.cloudflare.com/bots/additional-configurations/ja3-ja4-fingerprint/

ASK: Extract what this page says about JA3 and JA4 fingerprints: how Cloudflare uses them, what fields (cf.bot_management.ja3_hash, ja4, ja4_signals), and any note about how fingerprints are used in bot scoring or rules.

JA3/JA4 Fingerprints on Cloudflare

Overview

JA3 and JA4 are "SSL/TLS-based identifiers" that profile clients based on how they initiate connections. They serve as stable identifiers across different destinations, with JA4 improving upon JA3 by sorting ClientHello extensions for better browser grouping.

Available Fields

The documentation references these fields:

• JA3 fingerprint (traditional identifier)
• JA4 fingerprint (improved version)
• ja4Signals object containing:
  • Ratios: h2h3_ratio_1h, heuristic_ratio_1h, browser_ratio_1h, cache_ratio_1h
  • Ranks: uas_rank_1h, paths_rank_1h, reqs_rank_1h, ips_rank_1h
  • Quantiles: reqs_quantile_1h, ips_quantile_1h

Use Cases in Bot Management

Analytics: Fingerprints are used in Bot Analytics, Security Events, GraphQL APIs, and logs.

Rules & Actions: Organizations can leverage fingerprints with WAF custom rules, Transform Rules, and Workers to:

• Block or allow specific traffic patterns
• Identify mobile application traffic
• Remedy false positives/negatives quickly

Important Limitations

Fingerprints may be unavailable for non-TLS traffic, internal O2O requests, or when Bot Management is skipped. The documentation notes that "results with NaN or Infinity values will be excluded."

[FETCH #24] https://botcloud.dev/blog/playwright-anti-fingerprinting-alternatives-2026/

ASK: Summarize the article's claims about each tool's 2026 status: playwright-extra/puppeteer-extra-plugin-stealth (deprecated?), playwright-stealth python, rebrowser-patches, patchright, camoufox, nodriver, and any dates or version numbers cited. Note the publication date of the article.

The server returned HTTP 403 Forbidden.

The response body was not retrieved. If this URL requires authentication, use an authenticated tool (e.g. gh for GitHub, or an MCP-provided fetch tool) instead of WebFetch.

[FETCH #25] https://deviceandbrowserinfo.com/learning_zone/articles/detecting-headless-chrome-puppeteer-2024

ASK: List all detection signals described for headless Chrome/Puppeteer (user agent HeadlessChrome, navigator.webdriver, sec-ch-ua, CDP Runtime.enable / Error.stack serialization trick, missing plugins, window.chrome, permissions, WebGL renderer SwiftShader, screen size, languages), with a one-line explanation each and the author's note about which are still effective in 2024.

Puppeteer Detection Signals (2024)

Based on the article, here are the detection techniques explicitly covered:

1. User Agent String – "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.0.0 Safari/537.36" reveals headless Chrome automation.

2. navigator.webdriver Property – Returns true when browser automation is active, though disableable via --disable-blink-features=AutomationControlled.

3. CDP Detection via Error.stack – Exploits Chrome DevTools Protocol serialization behavior; triggering property getters during error logging exposes automated contexts.

Author's 2024 Effectiveness Notes:

The article confirms all three techniques remain viable but acknowledges limitations. Specifically, it notes that "sophisticated attackers" now use frameworks like nodriver to bypass CDP detection by avoiding the Runtime.enable command.

The article does not discuss sec-ch-ua, missing plugins, window.chrome, permissions, WebGL renderer SwiftShader, screen size, or languages—only the three techniques above are detailed.

[FETCH #26] https://www.rfc-editor.org/rfc/rfc9110.html#name-retry-after

ASK: Quote RFC 9110's definition of the Retry-After header field (which status codes it applies to: 503, 429 reference, 3xx), its two formats (HTTP-date, delay-seconds), and also the definitions of If-Modified-Since / If-None-Match conditional request semantics and the 304 Not Modified status in one paragraph each.

RFC 9110 Definitions

Retry-After: This header applies to 503 (Service Unavailable) and 429 responses, signaling when a client should retry. It supports two formats: "an HTTP-date value or a delay specified in decimal seconds" representing either an absolute time or relative delay before retry.

If-Modified-Since: This precondition allows clients to request a representation only if it has changed since a specified timestamp. The server should respond with the full representation if modifications occurred after that date, otherwise returning 304.

If-None-Match: This conditional uses entity tags to validate whether a resource matches a client's cached version. When the current ETag differs from the provided value, the server sends the representation; matching tags trigger a 304 response.

304 Not Modified: This status indicates "the selected representation has not been modified" since the client's conditional request criteria were evaluated, allowing clients to use their cached copy while confirming its continued validity.

[SEARCH #19] Playwright 1.49 new headless mode chromium-headless-shell channel default "headless" changes

Web search results for query: "Playwright 1.49 new headless mode chromium-headless-shell channel default "headless" changes"

Links: [{"title":"Changes in Chromium headless in Playwright v1.49 · Issue #33566 · microsoft/playwright","url":"https://github.com/microsoft/playwright/issues/33566"},{"title":"[Bug]: Playwright tries to use incorrect executable for channel: 'chromium' in headless mode · Issue #33960 · microsoft/playwright","url":"https://github.com/microsoft/playwright/issues/33960"},{"title":"Browsers | Playwright Python","url":"https://playwright.dev/python/docs/browsers"},{"title":"Browsers | Playwright","url":"https://playwright.dev/docs/browsers"},{"title":"Browsers | Playwright .NET","url":"https://playwright.dev/dotnet/docs/browsers"},{"title":"When Tests Should Run Headless vs Headed in Playwright","url":"https://currents.dev/posts/when-tests-should-run-headless-vs-headed-in-playwright"},{"title":"[Bug]: Unable to launch chromium in headless mode in win11 with v1.49.1. · Issue #34306 · microsoft/playwright","url":"https://github.com/microsoft/playwright/issues/34306"},{"title":"Headless vs Headed in Playwright: Key Differences Explained","url":"https://testdino.com/blog/headless-vs-headed"}]

Based on the search results, here's what changed in Playwright 1.49 regarding headless mode and Chromium:

Key Changes in Playwright 1.49

Default Behavior: Playwright will skip downloading headed chromium build, and will use chromium-headless-shell when running headless.

For Channel-Based Browsers: Chromium switches to new headless implementation. Users of channels chrome, msedge and similar are affected and will have to update the test suite.

New Headless Mode Option: You can opt into the new headless mode by using 'chromium' channel. New Headless is the real Chrome browser, and is thus more authentic, reliable, and offers more features. This makes it more suitable for high-accuracy end-to-end web app testing or browser extension testing.

Notable Behavioral Changes: PDF documents are now rendered in the page, instead of being downloaded. Screenshots are different. Playwright recommends updating all screenshot expectations.

Performance Note: New headless is slightly slower on average in Playwright's testing. Note that it can be faster or slower on your particular test suite.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #20] 야놀자 여기어때 크롤링 민사 손해배상 판결 2024 2025 10억 부정경쟁방지법

Web search results for query: "야놀자 여기어때 크롤링 민사 손해배상 판결 2024 2025 10억 부정경쟁방지법"

Links: [{"title":"야놀자, 여기어때 상대 민사 승소…法 10억 배상 | 한국경제","url":"https://www.hankyung.com/article/202108230529Y"},{"title":"'여기어때' 사건으로 살펴본 '크롤링'의 적법성 [긱스]","url":"https://www.hankyung.com/article/202404242738i"},{"title":"'무단 크롤링'으로 야놀자 정보 빼간 여기어때 [법알못 판례 읽기]","url":"https://v.daum.net/v/kpTVF0ahwV"},{"title":"'여기어때' 사건으로 살펴본 '크롤링'의 적법성 [긱스]","url":"https://v.daum.net/v/Fi3RbZBWW5"},{"title":"판례 > 데이터베이스제작자의권리침해금지등 | 국가법령정보센터","url":"https://www.law.go.kr/LSW/precInfoP.do?precSeq=226943"},{"title":"크롤링, 저작권침해 VS 합법? 실제 사례와 살펴보는 사전 ...","url":"https://minwho.kr/kr/dispute/dispute_view.php?idx=45828"},{"title":"1P by GN⁺ 2024-07-24 | ★ favorite | 댓글 1개","url":"https://news.hada.io/topic?id=15994"},{"title":"NAVER Shopping (2025)","url":"https://brunch.co.kr/@@4Scy/120"}]

웹 검색 결과를 정리하면 다음과 같습니다:

야놀자 vs 여기어때 크롤링 사건 개요

야놀자는 2016년 자사 서버에 접속이 몰려 장애가 발생하자 원인을 분석한 결과 경쟁사인 여기어때가 숙박업소 정보를 대량으로 탈취했다고 보고 수사 당국에 고소했고, 2018년 민사 소송도 제기했습니다.

여기어때의 크롤링 행위

여기어때는 2015년부터 경쟁 회사인 야놀자의 모바일 애플리케이션이나 PC용 웹페이지에 접속해 제휴 숙박 업소 목록, 주소 정보, 가격 정보를 확인하고 공유했으며, 2016년 1월부터 크롤링 프로그램을 사용하기 시작했습니다.

1심 판결

서울중앙지법은 야놀자가 여기어때를 상대로 낸 권리침해금지 소송 1심에서 "야놀자에 10억원을 지급하라"며 원고 일부 승소 판결을 내렸습니다. 재판부는 "야놀자가 2016년 한 해에 영업부서 인건비만으로 26억원이 넘는 금액을 투여한 점, 여기어때가 손해 배상을 위한 노력을 기울이지 않고 있는 점 등을 종합했다"고 설명했습니다.

법적 근거 - 부정경쟁방지법

민사사건에서는 부정경쟁방지법을 주된 쟁점으로 판단했으며, 민사 법원은 여기어때가 '야놀자의 상당한 투자와 노력으로 만들어진 성과를 공정한 상거래 관행이나 경쟁질서에 반하는 방법으로 여기어때의 영업을 위해서 무단으로 사용함으로써 야놀자의 경제적 이익을 침해했다'고 판단했습니다.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #21] 정보통신망법 제48조 제1항 "정당한 접근권한 없이 또는 허용된 접근권한을 넘어" 정보통신망에 침입 처벌 제71조

Web search results for query: "정보통신망법 제48조 제1항 "정당한 접근권한 없이 또는 허용된 접근권한을 넘어" 정보통신망에 침입 처벌 제71조"

Links: [{"title":"정보통신망 침입 여부가 문제된 사건","url":"https://brunch.co.kr/@@6nIm/730"},{"title":"판례 > 정보통신망이용촉진및정보보호등에관한법률위반(정보통신망침해등) | 국가법령정보센터","url":"https://www.law.go.kr/LSW/precInfoP.do?precSeq=599601"},{"title":"대법원 2021. 6. 24. 선고 2020도17860 판결 [정보통신망 ...","url":"https://casenote.kr/%EB%8C%80%EB%B2%95%EC%9B%90/2020%EB%8F%8417860"},{"title":"조문정보 | 국가법령정보센터","url":"https://www.law.go.kr/LSW//lsLinkProc.do?lsNm=%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D+%EC%9D%B4%EC%9A%A9%EC%B4%89%EC%A7%84+%EB%B0%8F+%EC%A0%95%EB%B3%B4%EB%B3%B4%ED%98%B8+%EB%93%B1%EC%97%90+%EA%B4%80%ED%95%9C+%EB%B2%95%EB%A5%A0&efYd=20091119&lsId=prec20091119&lsClsCd=L&mode=11&joNo=004800&lnkJoNo=undefined"},{"title":"정보통신망 이용촉진 및 정보보호 등에 관한 법률 제48조(정보통신망 침해행위 등의 금지) - CaseNote","url":"https://casenote.kr/%EB%B2%95%EB%A0%B9/%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D_%EC%9D%B4%EC%9A%A9%EC%B4%89%EC%A7%84_%EB%B0%8F_%EC%A0%95%EB%B3%B4%EB%B3%B4%ED%98%B8_%EB%93%B1%EC%97%90_%EA%B4%80%ED%95%9C_%EB%B2%95%EB%A5%A0/%EC%A0%9C48%EC%A1%B0"},{"title":"[특별기고-이용재 변호사] 정보통신망 침입과 접근권한 < 인터뷰 < 피플 < 기사본문 - 데일리시큐","url":"https://www.dailysecu.com/news/articleView.html?idxno=20228"},{"title":"[일문일답] 정보통신망법위반죄 제48조 제1항 타인 계정 양도받는 것이 정보통신망 침입인가 | 인터넷ㆍ방송ㆍ통신 | ITㆍ정보ㆍ방송통신","url":"https://www.nepla.ai/wiki/it-%EC%A0%95%EB%B3%B4-%EB%B0%A9%EC%86%A1%ED%86%B5%EC%8B%A0/%EC%9D%B8%ED%84%B0%EB%84%B7-%EB%B0%A9%EC%86%A1-%ED%86%B5%EC%8B%A0/-%EC%9D%BC%EB%AC%B8%EC%9D%BC%EB%8B%B5-%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D%EB%B2%95%EC%9C%84%EB%B0%98%EC%A3%84-%EC%A0%9C48%EC%A1%B0-%EC%A0%9C1%ED%95%AD-%ED%83%80%EC%9D%B8-%EA%B3%84%EC%A0%95-%EC%96%91%EB%8F%84%EB%B0%9B%EB%8A%94-%EA%B2%83%EC%9D%B4-%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D-%EC%B9%A8%EC%9E%85%EC%9D%B8%EA%B0%80-2w0ndvqjnj7d"},{"title":"정보통신망 이용촉진 및 정보보호 등에 관한 법률(정보통신망법) | 제48조(정보통신망 침해행위 등의 금지) - LBOX 법령","url":"https://lbox.kr/v2/statute/%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D%EC%9D%B4%EC%9A%A9%EC%B4%89%EC%A7%84%EB%B0%8F%EC%A0%95%EB%B3%B4%EB%B3%B4%ED%98%B8%EB%93%B1%EC%97%90%EA%B4%80%ED%95%9C%EB%B2%95%EB%A5%A0/%EB%B3%B8%EB%AC%B8%20%3E%20%EC%A0%9C6%EC%9E%A5%20%3E%20%EC%A0%9C48%EC%A1%B0?statuteName=%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D+%EC%9D%B4%EC%9A%A9%EC%B4%89%EC%A7%84+%EB%B0%8F+%EC%A0%95%EB%B3%B4%EB%B3%B4%ED%98%B8+%EB%93%B1%EC%97%90+%EA%B4%80%ED%95%9C+%EB%B2%95%EB%A5%A0&statuteType=%EB%B2%95%EB%A5%A0&effectiveDate=2025-06-04&proclamationNumber=%EC%A0%9C+20534%ED%98%B8&proclamationDate=2024-12-03&revisionType=%EC%9D%BC%EB%B6%80%EA%B0%9C%EC%A0%95"}]

이제 제71조의 처벌 규정에 대한 정보를 검색하겠습니다.

Links: [{"title":"정보통신망 이용촉진 및 정보보호 등에 관한 법률 제71조 | 시행 2014. 11. 29. - 판례검색, 빅케이스 하나로 끝","url":"https://bigcase.ai/law/%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D%EC%9D%B4%EC%9A%A9%EC%B4%89%EC%A7%84%EB%B0%8F%EC%A0%95%EB%B3%B4%EB%B3%B4%ED%98%B8%EB%93%B1%EC%97%90%EA%B4%80%ED%95%9C%EB%B2%95%EB%A5%A0/%EC%A0%9C71%EC%A1%B0?refDate=20150325"},{"title":"개인정보 보호법 제71조(벌칙) - CaseNote","url":"https://casenote.kr/%EB%B2%95%EB%A0%B9/%EA%B0%9C%EC%9D%B8%EC%A0%95%EB%B3%B4_%EB%B3%B4%ED%98%B8%EB%B2%95/%EC%A0%9C71%EC%A1%B0"},{"title":"정보통신망 이용촉진 및 정보보호 등에 관한 법률 제71조(벌칙) - CaseNote","url":"https://casenote.kr/%EB%B2%95%EB%A0%B9/%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D_%EC%9D%B4%EC%9A%A9%EC%B4%89%EC%A7%84_%EB%B0%8F_%EC%A0%95%EB%B3%B4%EB%B3%B4%ED%98%B8_%EB%93%B1%EC%97%90_%EA%B4%80%ED%95%9C_%EB%B2%95%EB%A5%A0/%EC%A0%9C71%EC%A1%B0"},{"title":"정보통신망 이용촉진 및 정보보호 등에 관한 법률 제71조 | 시행 2020. 12. 10. - 판례검색, 빅케이스 하나로 끝","url":"https://bigcase.ai/law/%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D%EC%9D%B4%EC%9A%A9%EC%B4%89%EC%A7%84%EB%B0%8F%EC%A0%95%EB%B3%B4%EB%B3%B4%ED%98%B8%EB%93%B1%EC%97%90%EA%B4%80%ED%95%9C%EB%B2%95%EB%A5%A0/%EC%A0%9C71%EC%A1%B0?refDate=20210715"},{"title":"정보통신망 이용촉진 및 정보보호 등에 관한 법률","url":"https://seowon.seowon.ac.kr/websamp/raw.htm"},{"title":"벌칙[개인정보보호법 제71조][ 5년 이하의 징역 또는 5천만원 이하의 벌금] - 기초자료 - 보영소","url":"https://m.cafe.daum.net/insuranceprofit/Bo3B/1576"},{"title":"조문정보 | 국가법령정보센터","url":"https://www.law.go.kr/LSW/lsLinkProc.do?lsClsCd=L&lsNm=%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D+%EC%9D%B4%EC%9A%A9%EC%B4%89%EC%A7%84+%EB%B0%8F+%EC%A0%95%EB%B3%B4%EB%B3%B4%ED%98%B8+%EB%93%B1%EC%97%90+%EA%B4%80%ED%95%9C+%EB%B2%95%EB%A5%A0&lsId=prec20170619&joNo=007100&efYd=20170619&mode=11&lnkJoNo=undefined"},{"title":"정보통신망 이용촉진 및 정보보호 등에 관한 법률(정보통신망법) | 제71조(벌칙) - LBOX 법령","url":"https://lbox.kr/v2/statute/%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D%EC%9D%B4%EC%9A%A9%EC%B4%89%EC%A7%84%EB%B0%8F%EC%A0%95%EB%B3%B4%EB%B3%B4%ED%98%B8%EB%93%B1%EC%97%90%EA%B4%80%ED%95%9C%EB%B2%95%EB%A5%A0/%EB%B3%B8%EB%AC%B8%20%3E%20%EC%A0%9C10%EC%9E%A5%20%3E%20%EC%A0%9C71%EC%A1%B0?statuteName=%EC%A0%95%EB%B3%B4%ED%86%B5%EC%8B%A0%EB%A7%9D+%EC%9D%B4%EC%9A%A9%EC%B4%89%EC%A7%84+%EB%B0%8F+%EC%A0%95%EB%B3%B4%EB%B3%B4%ED%98%B8+%EB%93%B1%EC%97%90+%EA%B4%80%ED%95%9C+%EB%B2%95%EB%A5%A0&statuteType=%EB%B2%95%EB%A5%A0&effectiveDate=2025-07-22&proclamationNumber=%EC%A0%9C+20678%ED%98%B8&proclamationDate=2025-01-21&revisionType=%EC%9D%BC%EB%B6%80%EA%B0%9C%EC%A0%95"}]

검색 결과를 정리하겠습니다.

정보통신망법 제48조 제1항 및 제71조 정보

제48조 제1항 - 정보통신망 침해행위 등의 금지

제48조 제1항은 "누구든지 정당한 접근권한 없이 또는 허용된 접근권한을 넘어 정보통신망에 침입하여서는 아니 된다."고 규정하고 있습니다.

법리 해석:

정보통신망법은 그 보호조치에 대한 침해나 훼손이 수반되지 않더라도 부정한 방법으로 타인의 식별부호를 이용하거나 보호조치에 따른 제한을 면할 수 있게 하는 부정한 명령을 입력하는 등의 방법으로 침입하는 행위도 금지하고 있습니다.

제71조 - 벌칙

제71조 제1항에서 다음 각 호의 어느 하나에 해당하는 자는 5년 이하의 징역 또는 5천만원 이하의 벌금에 처하며, 제9호는 제48조제1항을 위반하여 정보통신망에 침입한 자를 규정하고 있습니다.

따라서 정보통신망법 제48조 제1항을 위반하여 정보통신망에 침입한 경우, 5년 이하의 징역 또는 5천만원 이하의 벌금에 처해질 수 있습니다.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #22] web scraping without getting blocked checklist when plain requests httpx is enough vs need browser decision

Web search results for query: "web scraping without getting blocked checklist when plain requests httpx is enough vs need browser decision"

Links: [{"title":"How Headers Are Used to Block Web Scrapers and How to Fix It","url":"https://scrapfly.io/blog/posts/how-to-avoid-web-scraping-blocking-headers"},{"title":"Why websites block scrapers | Web Scraper","url":"https://webscraper.io/blog/why-websites-block-scrapers"},{"title":"Web Scraping Without Getting Blocked: 2026 Guide | ScrapingBee","url":"https://www.scrapingbee.com/blog/web-scraping-without-getting-blocked/"},{"title":"8 Tips To Avoid Getting Blocked While Web Scraping (Updated)","url":"https://www.scrapingdog.com/blog/how-to-avoid-getting-blocked-while-scraping/"},{"title":"Web Scraping Without Getting Banned in 2026: The Complete Anti-Bot Bypass Guide - DEV Community","url":"https://dev.to/vhub_systems_ed5641f65d59/web-scraping-without-getting-banned-in-2026-the-complete-anti-bot-bypass-guide-297h"},{"title":"10 Best Tips on How to Not Get Blocked When Web Scraping","url":"https://www.scraperapi.com/blog/10-tips-for-web-scraping/"},{"title":"14 Ways for Web Scraping Without Getting Blocked - ZenRows","url":"https://www.zenrows.com/blog/web-scraping-without-getting-blocked"},{"title":"Web Scraping Without Getting Blocked: 12 Techniques","url":"https://brightdata.com/blog/web-data/web-scraping-without-getting-blocked"},{"title":"15 Methods to Not Get Blocked Web Scraping","url":"https://roundproxies.com/blog/web-scraping-without-getting-blocked/"}]

Based on the search results, here's a comprehensive overview of web scraping detection and when to use plain HTTP clients vs browsers:

When Plain HTTP Clients Like httpx/requests Are Enough

httpx library does respect the header order, and can be safely used for web scraping as a requests alternative. Plain HTTP clients work when:

1. For simple static sites with basic headers - You can bypass header-based blocking by replicating real browser behavior, maintaining proper header order, and using authentic User-Agent strings.

2. When headers and User-Agent are properly configured - The User-Agent request header lets servers identify the application, and some websites block certain requests if they contain User-Agent that doesn't belong to a major browser.

3. For APIs discovered via network inspection - Many websites use single-page applications that fetch data via XHR/Fetch requests to JSON APIs, which are cleaner, faster, and less likely to trigger anti-bot systems than full browser rendering.

When You Need a Browser or Advanced Solution

You need something more sophisticated when:

1. TLS Fingerprinting is checked - Python's requests library sends a ClientHello with a specific cipher suite combination that hashes to a JA3 value that is distinctly non-browser, and Cloudflare, Akamai, and DataDome check this fingerprint before serving any content.

2. Multiple detection layers are active - Modern websites are stricter, evaluating requests across multiple detection layers, assigning trust scores, or making a binary bot/human decision before serving page content.

3. Browser fingerprinting is involved - Websites detect browser type through dozens of JavaScript signals: navigator.webdriver, canvas rendering output, WebGL GPU strings, installed fonts, screen resolution, audio context behavior, and plugin lists.

Decision Indicators

The nature of the block often indicates which detection layer flagged your request: an instant 403 error means your headers or TLS fingerprint gave you away, while a page that renders fine in a browser but fails from Python requests often points to a TLS fingerprint issue.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[CMD] cd "C:/Users/encep/AppData/Local/Temp/claude/D--workspace-DMF-Crawler/c00474d0-f118-4917-817d-1c16591aefc7/scratchpad" && curl -s -D hdr117.txt -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36" --max-time 25 -o bbs117.html "https://n

…[truncated 636 chars]

--- headers ---
HTTP/1.1 200 OK

Date: Wed, 02 Sep 2026 12:59:52 GMT

Server: Apache

Allow: GET, POST, OPTIONS

Strict-Transport-Security: max-age=63072000

Expires: 0

Cache-Control: no-cache, no-store, max-age=0, must-revalidate

Access-Control-Allow-Headers: Origin, Content-Type, content-type, Content-Style-Type, Accept, Authorization,DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,If-Modified-Since, x-requested-with, Content-Security-Policy, X-UA-Compatible, X-Content-Type-Options, X-FRAME-OPTIONS, Cache-Control, Pragma

X-XSS-Protection: 1; mode=block

Pragma: no-cache

Access-Control-Allow-Origin: *.mfds.go.kr

Strict-Transport-Security: max-age=31536000 ; includeSubDomains

X-Content-Type-Options: nosniff

Content-Language: ko-KR

Access-Control-Allow-Methods: GET, POST, OPTIONS

Set-Cookie: key=value; SameSite=Lax;Secure;;HttpOnly;Secure

Set-Cookie: JSESSIONID=QlkUfngIrxGZXjOHGuFtos2PYnYfyGSDXjZVAyMx.ext41; path=/; secure; HttpOnly; Max-Age=14400; Expires=Wed, 02-Sep-2026 16:59:53 GMT;HttpOnly;Secure

Set-Cookie: elevisor_for_j2ee_uid=6tyj95b4dgqkj; path=/; Max-Age=31536000; Expires=Thu, 02-Sep-2027 12:59:53 GMT;HttpOnly;Secure

Transfer-Encoding: chunked

Content-Type: text/html;charset=UTF-8



--- size ---
382506 bbs117.html
--- title / form / pagination hints ---
<title>의약품안전나라   &gt;   의약품등 정보  &gt;  의약품 및 화장품 품목정보  &gt;  원료의약품등록(DMF) 정보 </title>
<title>현재메뉴 &gt; 3차메뉴 &gt; 2차메뉴 &gt; 1차메뉴 &gt; 식품의약품안전처 의약품통합정보시스템2</title>
action="/search"
name="btnSearch"
name="ctgryNo"
name="description"
name="keyword"
name="limit"
name="page"
name="registTsEnd"
name="registTsStart"
name="robots"
name="searchYn"
name="title"
name="totalPages"
--- links with page param ---
--- post title samples ---
등록대상 원료의약품(DMF) 등록 공고(2021년 2월 1,2주차, 2021.2.1.-2021.02.14) 관련 현재<ED9884>
등록대상 원료의약품(DMF) 등록 공고(2021년 2월 1,2주차, 2021.2.1.-2021.02.14) 관련 현재<ED9884>
등록대상 원료의약품(DMF) 등록 공고(2021년 2월 1,2주차, 2021.2.1.-2021.02.14)
등록대상 원료의약품(DMF) 등록 공고(2021년 1월 4주차, 2021.1.25.-2021.01.31) 관련 현재<ED9884>
등록대상 원료의약품(DMF) 등록 공고(2021년 1월 4주차, 2021.1.25.-2021.01.31) 관련 현재<ED9884>

[SEARCH #23] Cloudflare "cf-mitigated" challenge header detect challenge page response status 403

Web search results for query: "Cloudflare "cf-mitigated" challenge header detect challenge page response status 403"

Web search was not performed: this session has used its web search budget (200 of 200 WebSearch calls). Continue with the information already gathered instead of issuing more searches. If more searches are genuinely needed, ask the user to raise CLAUDE_CODE_MAX_WEB_SEARCHES_PER_SESSION.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[SEARCH #24] 야놀자 여기어때 크롤링 민사 항소심 2심 서울고등법원 손해배상 판결 결과

Web search results for query: "야놀자 여기어때 크롤링 민사 항소심 2심 서울고등법원 손해배상 판결 결과"

Web search was not performed: this session has used its web search budget (200 of 200 WebSearch calls). Continue with the information already gathered instead of issuing more searches. If more searches are genuinely needed, ask the user to raise CLAUDE_CODE_MAX_WEB_SEARCHES_PER_SESSION.

REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

[FETCH #27] https://www.hankyung.com/article/202404242738i

ASK: 여기어때 사건으로 본 크롤링 적법성 기사 내용을 정리해줘: 형사(대법원 2022 무죄)와 민사(1심 10억, 항소심 결과가 있으면 그 내용과 배상액, 확정 여부), 부정경쟁방지법 (파)목 성과도용 판단, 저자가 제시하는 크롤링 적법성 판단 기준/체크리스트.

The server returned HTTP 403 Forbidden.

The response body was not retrieved. If this URL requires authentication, use an authenticated tool (e.g. gh for GitHub, or an MCP-provided fetch tool) instead of WebFetch.

[FETCH #28] https://github.com/microsoft/playwright/issues/33566

ASK: Summarize the announced changes: what headless mode chromium uses by default (chromium-headless-shell vs new headless), how to opt into new headless (channel 'chromium'), effect on chrome/msedge channels, and whether the user agent string of new headless still contains "HeadlessChrome".

Chromium Headless Changes in Playwright v1.49

Default Headless Mode

By default, Playwright now uses chromium-headless-shell, a separate browser build that follows the old headless mode behavior. This change is transparent—no action required.

Opting Into New Headless

To switch to the new headless implementation, add channel: 'chromium' to your Playwright config:

use: {
  channel: 'chromium',
}

Impact on Chrome/Edge Channels

Users of chrome, msedge, and similar browser channels will be affected. The document notes that "new version of Google Chrome and Microsoft Edge will only include the new headless mode." Key breaking changes include:

• PDFs now render in-page instead of downloading
• Screenshots will differ
• Slightly slower average performance
• Variable GPU/WebGL availability

User Agent String

The document does not address whether the new headless's user agent still contains "HeadlessChrome." This information is not provided in the source material.

[FETCH #29] https://pypi.org/project/rebrowser-playwright/

ASK: Extract: latest version number and release date, description, and which playwright version it tracks.

I cannot extract the requested information from the provided content. The web page only displays an error message stating: "A required part of this site couldn't load. This may be due to a browser extension, network issues, or browser settings."

The page contains no data regarding version numbers, release dates, descriptions, or Playwright version tracking. The content failed to load properly, making it impossible to retrieve the specific details you're seeking.

[FETCH #30] https://casenote.kr/법령/정보통신망_이용촉진_및_정보보호_등에_관한_법률/제48조

ASK: 정보통신망법 제48조 제1항, 제2항, 제3항의 조문 원문을 그대로 인용하고, 벌칙(제71조 제1항 제9호: 5년 이하 징역 또는 5천만원 이하 벌금 등)이 페이지에 있으면 함께 인용해줘. 페이지가 열리지 않으면 그렇다고 말해줘.

정보통신망법 제48조 제1항, 제2항, 제3항

제1항: "누구든지 정당한 접근권한 없이 또는 허용된 접근권한을 넘어 정보통신망에 침입하여서는 아니 된다."

제2항: "누구든지 정당한 사유 없이 정보통신시스템, 데이터 또는 프로그램 등을 훼손·멸실·변경·위조하거나 그 운용을 방해할 수 있는 프로그램(이하 '악성프로그램'이라 한다)을 전달 또는 유포하여서는 아니 된다."

제3항: "누구든지 정보통신망의 안정적 운영을 방해할 목적으로 대량의 신호 또는 데이터를 보내거나 부정한 명령을 처리하도록 하는 등의 방법으로 정보통신망에 장애가 발생하게 하여서는 아니 된다."

---

벌칙

페이지에는 제71조 제1항 제9호에 따른 벌칙이 명시되어 있습니다:

"5년 이하 징역 또는 5천만원 이하 벌금"

[FETCH #31] https://pypi.org/project/playwright-stealth/

ASK: Extract: latest version number, release date, maintainer/author, required playwright version, short description, and the usage API (Stealth class / stealth_async / use_async context manager).

playwright-stealth Package Summary

Latest Version: 2.0.3

Release Date: April 4, 2026

Maintainer: Mattwmaster58

Required Playwright Version: Not explicitly specified on this page

Description: A Python library that makes Playwright browser instances appear less like automation tools. The package states: "Make your playwright instance stealthy" and notes it's "a proof-of-concept starting point" that won't bypass sophisticated bot detection.

Usage API:

The library provides the Stealth class with two main usage patterns:

1. Recommended approach uses the use_async() context manager:

async with Stealth().use_async(async_playwright()) as p:
    browser = await p.chromium.launch()

2. Manual application via apply_stealth_async():

stealth = Stealth(navigator_languages_override=("fr-FR", "fr"))
await stealth.apply_stealth_async(context)

Configuration options include navigator_languages_override and init_scripts_only parameters for customizing evasion behavior.

[FETCH #32] https://pypi.org/project/patchright/

ASK: Extract: latest version number and release date, description, install command, and the recommended launch args snippet if present (channel="chrome", headless=False, no_viewport=True).

Patchright Summary

Latest Version: 1.62.2 (Released August 29, 2026)

Description: "Undetected Python version of the Playwright testing and automation library."

Install Command:

pip install patchright
patchright install chromium

Recommended Launch Configuration:

playwright.chromium.launch_persistent_context(
    user_data_dir="...",
    channel="chrome",
    headless=False,
    no_viewport=True,
)

The documentation notes this setup avoids detection by using Google Chrome instead of Chromium and refraining from custom browser headers or user agents.

[FETCH #33] https://pypi.org/project/curl-cffi/

ASK: Extract: latest version number and release date, minimum python version, list of impersonate targets mentioned (e.g. chrome136, safari184, firefox135, edge), and whether it mentions ja3/akamai custom fingerprint parameters and HTTP/3.

curl-cffi Package Summary

Latest Version: 0.16.3 (Released September 2, 2026)

Minimum Python Version: 3.10

Impersonate Targets Mentioned:

• Chrome (including chrome124, chrome135, chrome150/152)
• Safari and Safari iOS
• Firefox
• Edge

Custom Fingerprint Parameters: Yes, the documentation explicitly references support for custom fingerprints via ja3 and akamai parameters, allowing users to "impersonate other than browsers" by supplying their own fingerprint strings.

HTTP/3 Support: Yes, confirmed as available since v0.15.0 with "fingerprints and udp proxy" support added in v0.15.0.

[FETCH #34] https://pypi.org/project/nodriver/

ASK: Extract: latest version number and release date, python requirement, description.

nodriver Package Information

Latest Version: 0.50.3

Release Date: May 13, 2026

Python Requirement: Python >=3.9

Description:

nodriver is an async browser automation and web scraping library that represents the successor to Undetected-Chromedriver. The package provides "next level async webscraping and browser automation" capabilities without requiring Selenium or a separate chromedriver binary.

Key characteristics include direct CDP (Chrome DevTools Protocol) communication for improved WAF resistance, full asynchronous operation, and user-friendly defaults that enable basic functionality in just a few lines of code. The library automatically manages browser profiles, cleaning them up after use, and includes features like element selection by text or CSS selector, cookie management, and iframe support. It works with Chromium-based browsers including Chrome, Edge, and Brave.

[FETCH #35] https://pypi.org/project/camoufox/

ASK: Extract: latest version number and release date, python requirement, description, fetch command (python -m camoufox fetch).

Camoufox Package Information

Latest Version: 0.5.5 (released August 18, 2026)

Python Requirement: Python >=3.10, <4.0

Description: "Lightweight wrapper around the Playwright API to help launch Camoufox." The library generates unique device fingerprints and injects characteristics like OS, navigator data, fonts, and screen dimensions to mimic real-world traffic patterns.

Installation Command: python -m camoufox fetch

[FETCH #36] https://docs.python.org/3/library/urllib.robotparser.html

ASK: List the RobotFileParser methods: set_url, read, can_fetch, crawl_delay, request_rate, site_maps, mtime/modified, with their signatures and the version they were added.

RobotFileParser Methods

Method List with Signatures and Versions

Method	Signature	Version Added
set_url	set_url(url)	Core
read	read()	Core
parse	parse(lines)	Core
can_fetch	can_fetch(useragent, url)	Core
mtime	mtime()	Core
modified	modified()	Core
crawl_delay	crawl_delay(useragent)	3.6+
request_rate	request_rate(useragent)	3.6+
site_maps	site_maps()	3.8+

Key Details

• set_url(url): Sets the URL referring to a robots.txt file
• read(): Reads the robots.txt URL and feeds it to the parser
• parse(lines): Parses the lines argument
• can_fetch(useragent, url): Returns True if the useragent is allowed to fetch the URL
• mtime(): Returns the time the robots.txt file was last fetched
• modified(): Sets the time the robots.txt file was last fetched to the current time
• crawl_delay(useragent): Returns the Crawl-delay parameter value (returns None if not applicable or invalid)
• request_rate(useragent): Returns RequestRate(requests, seconds) named tuple (returns None if not applicable or invalid)
• site_maps(): Returns a list of Sitemap parameters (returns None if not applicable or invalid)

[FETCH #37] https://docs.datadome.co/docs/how-datadome-works

ASK: Summarize how DataDome works: where it sits (server-side module + JS tag), decision latency, what signals it uses (headers, TLS, JS fingerprint, behavior), and what responses it returns (403 with captcha/challenge page, x-datadome headers). If page not found say so.

The server returned HTTP 404 Not Found.

The response body was not retrieved. If this URL requires authentication, use an authenticated tool (e.g. gh for GitHub, or an MCP-provided fetch tool) instead of WebFetch.

[FETCH #38] https://techdocs.akamai.com/bot-manager/docs/welcome-bot-manager

ASK: Summarize how Akamai Bot Manager detects bots: detection methods (known bot signatures, transparent detections, behavioral/anomaly, browser validation, sensor data via _abck cookie/JS challenge), actions (monitor, deny, tarpit, serve alternate), and any mention of TLS/HTTP fingerprinting. If page not found say so.

REDIRECT DETECTED: The URL redirects to a location that was not fetched automatically.

Original URL: https://techdocs.akamai.com/auth/login/akamai-external?scope=openid%20profile%20email&redirect=%2fgo%2fakamai-docs%3fredirect%3d%252Fbot-manager%252Fdocs%252Fwelcome-bot-manager Redirect URL (from the server's Location header — server-supplied, not verified): https://akamai-readme.us.auth0.com/authorize?response_type=code&client_id=X0LWNlCRUAyPS3W7LnMc6dH6uVw6cfDE&connection=akamai-external&redirect_uri=https%3A%2F%2Ftechdocs.akamai.com%2Fauth%2Freadme%2Fcallback%3Fcustomer%3Dakamai-external%26redirect%3D%252Fbot-manager%252Fdocs%252Fwelcome-bot-manager&scope=openid%20profile%20email Status: 302 Found

To complete your request, I need to fetch content from the redirected URL. Please use WebFetch again with these parameters:

• url: "https://akamai-readme.us.auth0.com/authorize?response_type=code&client_id=X0LWNlCRUAyPS3W7LnMc6dH6uVw6cfDE&connection=akamai-external&redirect_uri=https%3A%2F%2Ftechdocs.akamai.com%2Fauth%2Freadme%2Fcallback%3Fcustomer%3Dakamai-external%26redirect%3D%252Fbot-manager%252Fdocs%252Fwelcome-bot-manager&scope=openid%20profile%20email"
• prompt: "Summarize how Akamai Bot Manager detects bots: detection methods (known bot signatures, transparent detections, behavioral/anomaly, browser validation, sensor data via _abck cookie/JS challenge), actions (monitor, deny, tarpit, serve alternate), and any mention of TLS/HTTP fingerprinting. If page not found say so."

[FETCH #39] https://scrapfly.io/blog/posts/how-to-avoid-web-scraping-blocking-headers

ASK: Extract the claims about header order: which Python libraries preserve header order (requests vs httpx vs aiohttp), what a Chrome header order looks like, which headers matter most (User-Agent, Accept, Accept-Language, Accept-Encoding, Sec-CH-UA, Sec-Fetch-*), and the note about HTTP/2 header casing.

Header Order Claims in Web Scraping Article

Python Libraries and Header Preservation

The article identifies a critical distinction: requests library does not respect header order, making scrapers built with it easily detectable. Conversely, httpx preserves header ordering and is recommended as an alternative for proper header handling.

The article does not discuss aiohttp's header ordering behavior.

Chrome Header Order Example

The article provides Chrome on Linux header sequence:

"GET / HTTP/1.1 Host: 127.0.0.1:65432 Connection: keep-alive Cache-Control: max-age=0 sec-ch-ua: " Not A;Brand";v="99", "Chromium";v="99", "Google Chrome";v="99" sec-ch-ua-mobile: ?0 sec-ch-ua-platform: "Linux" Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0..."

Most Important Headers

The article emphasizes these as critical for detection avoidance:

1. User-Agent – described as "arguably the most important header"
2. Accept and Accept-Encoding – signal content type preferences
3. Sec-CH-UA headers – new client hint fields requiring alignment with User-Agent values
4. Sec-Fetch-* family – security metadata indicating request origin and type

HTTP/2 Header Casing Note

The article does not discuss HTTP/2 header casing conventions.

[CMD] cd "C:/Users/encep/AppData/Local/Temp/claude/D--workspace-DMF-Crawler/c00474d0-f118-4917-817d-1c16591aefc7/scratchpad" && echo "--- dates near titles ---" && grep -o -E '20[0-9]{2}-[0-9]{2}-[0-9]{2}' bbs117.html | sort | uniq -c | sort -rn | head -8 && echo "--- item links ---" && grep -o -E 'href="

…[truncated 663 chars]

--- dates near titles ---
      4 2020-11-11
      1 2026-08-27
      1 2023-07-06
      1 2021-02-19
      1 2021-02-05
      1 2021-01-28
      1 2021-01-21
      1 2021-01-08
--- item links ---
--- onclick/js pagination ---
--- form inputs ---
<input type="text" style="width:200px;" name="keyword" id="keywordTop" placeholder="검색어로 메뉴·정보 검색 가능" value="" alt="통합검색 검색어 입력창" title="통합검색 검색어 입력창" />
<input type="hidden" name="totalPages" id="totalPages" value="71" />
<input type="hidden" name="page" id="page" value="1" />
<input type="hidden" name="searchYn" id="searchYn" value="" />
<input type="hidden" name="limit" id="limit" value="10" />
--- meta robots ---
<meta name="robots" content="index,follow"/>
--- scripts hinting WAF/captcha ---

[CMD] cd "C:/Users/encep/AppData/Local/Temp/claude/D--workspace-DMF-Crawler/c00474d0-f118-4917-817d-1c16591aefc7/scratchpad" && echo "--- curl (system) fingerprint ---" && curl -s --max-time 20 "https://tls.browserleaks.com/json" | head -c 1200 && echo && echo "--- python availability ---" && (python --ve

…[truncated 298 chars]

--- curl (system) fingerprint ---
{
  "user_agent": "curl/8.10.1",
  "ja4": "t13d201200_2b729b4bf6f3_e24568c0d440",
  "ja4_r": "t13d201200_002f,0035,003c,003d,009c,009d,1301,1302,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030_0005,000a,000b,000d,0017,0023,002b,002d,0031,0033,ff01_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603",
  "ja4_o": "t13d201200_1079d97b4c9b_ec8845a7a0de",
  "ja4_ro": "t13d201200_1302,1301,c02c,c02b,c030,c02f,c024,c023,c028,c027,c00a,c009,c014,c013,009d,009c,003d,003c,0035,002f_0000,0005,002b,000d,0023,000a,000b,0033,0031,0017,ff01,002d_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603",
  "ja3_hash": "2800f914a7a4ba98aa9df62d316a460c",
  "ja3_text": "771,4866-4865-49196-49195-49200-49199-49188-49187-49192-49191-49162-49161-49172-49171-157-156-61-60-53-47,0-5-43-13-35-10-11-51-49-23-65281-45,29-23-24,0",
  "ja3n_hash": "ab39bb9170142e5563998af5cebaa6c9",
  "ja3n_text": "771,4866-4865-49196-49195-49200-49199-49188-49187-49192-49191-49162-49161-49172-49171-157-156-61-60-53-47,0-5-10-11-13-23-35-43-45-49-51-65281,29-23-24,0",
  "akamai_hash": "",
  "akamai_text": ""
}
--- python availability ---
Python 3.11.9

requests 2.32.3

httpx 0.28.1

Traceback (most recent call last):

  File "<string>", line 1, in <module>

ModuleNotFoundError: No module named 'curl_cffi'

playwright ok

[FETCH #40] https://developers.cloudflare.com/cloudflare-challenges/

ASK: Extract anything about: how to detect a challenge page response programmatically (the cf-mitigated header and its value "challenge", HTTP status code 403), challenge types (managed, JS, interactive, Turnstile), and how challenges are passed (cf_clearance cookie, its scope/TTL). Quote verbatim where possible.

Challenge Detection and Response Information

Based on the provided webpage content, I cannot extract the specific technical details you requested.

What is covered: The page defines Challenges as "security mechanisms used by Cloudflare to verify whether a visitor to your site is a real human and not a bot or automated script." It notes that challenges involve "evaluating client-side signals" or requesting minimal user action.

What is missing: The webpage does not contain information about:

• The cf-mitigated header or its "challenge" value
• HTTP status code 403 responses
• Specific challenge types (managed, JS, interactive, Turnstile)
• The cf_clearance cookie, its scope, or TTL

Recommendation: To find this technical implementation documentation, you would need to access the complete documentation index referenced at the top of the page: https://developers.cloudflare.com/cloudflare-challenges/llms.txt, or explore related sections like the Turnstile documentation.

[FETCH #41] https://developers.cloudflare.com/waf/reference/cloudflare-challenges/

ASK: Extract the section on detecting a challenge page response: which HTTP header (cf-mitigated) and status code (403) are returned for challenge pages; also the cf_clearance cookie details. Quote verbatim. If the page redirects or is missing say so.

Response

The provided web page content does not contain a section on detecting challenge page responses, HTTP headers (cf-mitigated), status codes (403), or cf_clearance cookie details.

The page functions as an overview/landing page for Cloudflare Challenges, explaining that they are "security mechanisms used by Cloudflare to verify whether a visitor to your site is a real human." It references related products like Turnstile and Bot Management but does not include technical implementation details about challenge response headers or cookies.

To find this information, you would need to access detailed documentation pages linked from this overview, such as the Turnstile or Bots product documentation mentioned in the "Related products" section.

[FETCH #42] https://pypi.org/pypi/rebrowser-playwright/json

ASK: From this JSON: report info.version, info.summary, and the upload_time of the latest release files (releases[info.version][0].upload_time). Also list the 3 most recent version numbers with upload dates if visible.

Rebrowser Playwright Package Information

Version: 1.52.0

Summary: "A high-level API to automate web browsers"

Latest Release Upload Time: 2025-05-09T05:23:03 (first file in 1.52.0 release)

3 Most Recent Versions

1. 1.52.0 - Released May 9, 2025
2. 1.49.1 - Released December 10, 2024
3. 1.49.0 - Released December 5, 2024

[FETCH #43] https://registry.npmjs.org/rebrowser-playwright

ASK: From this npm registry JSON: report dist-tags.latest, time.modified, time.created, and the upload times of the 3 most recent versions.

rebrowser-playwright NPM Registry Information

Latest Version: 1.52.0

Registry Timestamps:

• Created: September 28, 2024
• Last Modified: May 9, 2025

Three Most Recent Version Upload Times:

1. 1.52.0 - May 9, 2025 at 01:05:48 UTC
2. 1.49.1 - December 10, 2024 at 19:11:19 UTC
3. 1.49.0 - December 5, 2024 at 21:07:03 UTC

[FETCH #44] https://v.daum.net/v/Fi3RbZBWW5

ASK: 여기어때 사건으로 본 크롤링 적법성 기사 내용을 정리해줘: 형사(대법원 2022 무죄) 판단 요지, 민사(1심 10억, 항소심·상고심 결과가 있으면 그 내용과 배상액, 확정 여부, 선고일), 부정경쟁방지법 (파)목 성과도용 판단 근거, 기사가 제시하는 크롤링 적법성 판단 기준. 페이지가 열리지 않으면 그렇다고 말해줘.

여기어때 vs 야놀자 사건 크롤링 적법성 정리

형사 판결 (대법원 2022년 무죄 확정)

3가지 혐의 모두 무죄:

1. 정보통신망법 위반 - 무죄

   • "누구나 쉽게 프로그램을 이용해서 API 내 정보를 알아낼 수 있었고 약관상 크롤링 제한은 비회원인 여기어때에는 적용되지 않기 때문"

2. 저작권법 위반 - 무죄

   • 크롤링 정보가 일부분이고, 이미 알려진 정보여서 특별한 노력이 없었으며, 야놀자의 이익을 부당하게 해치지 않았다고 판단

3. 컴퓨터 등 장애업무방해죄 - 무죄

   • 실제 이용자 피해 증거 부재

민사 판결

1심: 10억 원 손해배상 판결 기사에서 항소심·상고심 결과와 최종 확정액은 명시하지 않음

판단 근거: 부정경쟁방지법 기반으로 "야놀자의 상당한 투자와 노력으로 만들어진 성과를 공정한 상거래 관행에 반하는 방법으로 무단 사용"

크롤링 적법성 판단 기준

형사처벌 가능성 낮음:

• API 접근 제한 없음
• 정보가 누구나 쉽게 구할 수 있는 수준
• 일부만 크롤링

형사처벌 가능성 높음:

• API 접근 제한 조치 있음
• 약관·홈페이지에 "무단 크롤링 금지" 명시
• 상당한 양질 정보 크롤링

민사 손해배상: 형사무죄에도 불구하고 발생 가능

[FETCH #45] https://www.law.go.kr/LSW/precInfoP.do?precSeq=226943

ASK: 이 판례의 법원명, 선고일, 사건번호, 사건명, 판시사항과 판결요지(데이터베이스제작자 권리, 부정경쟁방지법 성과도용, 손해배상액)를 정리해줘. 페이지가 열리지 않으면 그렇다고 말해줘.

판례 정보 요약

법원명: 서울중앙지방법원

선고일: 2021년 8월 19일

사건번호: 2018가합508729

사건명: 데이터베이스제작자의권리침해금지등

---

판시사항

숙박정보 제공 플랫폼 운영사(야놀자)의 경영진과 직원들이 크롤링 프로그램으로 경쟁사(여기어때)의 서버에서 제휴 숙박업소 정보를 무단 복제한 사건. 법원은 이를 부정경쟁행위로 판단했습니다.

---

판결요지

성과도용 부정경쟁행위 인정

• 2016년 1월부터 10월까지 약 9개월간 조직적으로 대량 정보 무단 복제
• 피고가 수집한 정보를 분석하여 경쟁 전략 수립에 활용

손해배상액: 10억 원

• 법원이 손해액 정확 입증의 어려움을 고려해 상당액 인정
• 2018년 3월 1일부터 2021년 8월 19일까지 연 5% 지연손해금
• 그 이후 연 12% 적용

---

페이지는 정상 열림을 확인했습니다.

[FETCH #46] https://github.com/berstend/puppeteer-extra

ASK: Does the README or repo page show any deprecation / maintenance notice for puppeteer-extra or puppeteer-extra-plugin-stealth (e.g., "no longer maintained", archived, last commit date)? Report stars and the last commit date visible.

Maintenance Status Assessment

Based on the provided repository page content, no deprecation or maintenance notice is visible. The page does not display any indicators such as "no longer maintained," "archived," or explicit maintenance warnings.

Observable Metrics:

• Stars: 7.4k stars shown on the repository
• Last Commit Date: Not visible in the provided content

The repository appears active with "239 Issues" and "36 Pull requests" listed, suggesting ongoing community engagement. However, the specific last commit date—which would help determine maintenance status—is not included in the extracted page content.

To confirm current maintenance status, you would need to check the actual commit history or the main package README at the packages directory level.

[FETCH #47] https://www.minwho.kr/kr/business/business_case_view.php?bgu=view&idx=32903

ASK: 잡코리아 대 사람인 크롤링 저작권침해금지 소송의 최종 결과를 정리해줘: 대법원 확정 여부와 시기(사건번호 있으면), 항소심 판단 요지(저작권법 제93조 데이터베이스제작자 권리, 부정경쟁방지법), 배상액. 페이지가 열리지 않으면 그렇다고 말해줘.

잡코리아 vs 사람인 크롤링 저작권침해 소송 정리

페이지 내용을 바탕으로 다음과 같이 정리됩니다:

최종 결과

대법원 확정: 상고 기각으로 확정 (2017년 4월 항소심 판결 이후)

주요 판결 내용

항소심 판단 (서울고등법원, 2017년 4월):

• "사람인이 경쟁사인 잡코리아가 제공하는 채용정보를 허락없이 크롤링해 자사 영업에 이용한 것은 저작권법 제93조 1항, 2항을 위반한 행위"
• "잡코리아의 데이터베이스제작자 권리 침해" 인정
• 부정경쟁행위 판결 (1심 서울중앙지방법원, 2016년 2월)

배상액

페이지에는 구체적인 배상액이 명시되어 있지 않습니다.

사건번호

제시된 내용에 사건번호가 기재되어 있지 않습니다.

[FETCH #48] https://html.duckduckgo.com/html/?q=elevisor_for_j2ee_uid+cookie

ASK: List the top results (title + URL + snippet) that explain what the cookie "elevisor_for_j2ee_uid" is and which product (APM / monitoring) sets it. If the search page did not load, say so.

The search page did not load. The content shown is a CAPTCHA challenge from DuckDuckGo asking users to select squares containing ducks. No search results about the "elevisor_for_j2ee_uid" cookie or its associated APM/monitoring product are present in the provided content.

[FETCH #49] https://www.pentasecurity.co.kr/news-letter/202409/

ASK: WAPPLES의 국내 웹방화벽 시장 점유율(몇 년 연속 1위, 나라장터 점유율 수치), 공공기관 도입 관련 언급, 봇/크롤러 차단 기능 언급을 정리해줘. 페이지가 열리지 않으면 그렇다고 말해줘.

WAPPLES 시장점유율 정보 조회 결과

페이지의 제목과 메타데이터에서만 제한된 정보를 확인할 수 있습니다.

확인된 내용

시장점유율:

• 제목에 "WAPPLES, 16년 연속 국내 웹방화벽 시장점유율 1위"라고 명시되어 있습니다.

제한사항: 웹페이지의 실제 본문 내용이 제공되지 않았습니다. 요청하신 다음 항목들에 대한 정보는 확인할 수 없습니다:

• 나라장터 점유율 수치
• 공공기관 도입 관련 세부 사항
• 봇/크롤러 차단 기능에 대한 설명

페이지의 전체 콘텐츠에 접근할 수 있다면 이 정보들을 제공할 수 있습니다.

[FETCH #50] https://developers.cloudflare.com/bots/reference/javascript-detections/

ASK: Summarize what Cloudflare JavaScript Detections do: what script is injected (/cdn-cgi/challenge-platform/), what cookie is set (cf_bm / cf_clearance?), what they detect (headless browsers, automation), and the note about first request not having JSD data. Quote verbatim where possible. If page missing, say so.

Cloudflare JavaScript Detections Summary

What's Injected: The system injects a lightweight JavaScript snippet via "/cdn-cgi/challenge-platform/…" paths that runs on every request to identify automated traffic.

Cookie Set: A cf_clearance cookie is issued to visitors after the JavaScript runs successfully. The cookie stores verification outcomes in the cf.bot_management.js_detection.passed field—either true (verified) or false (failed).

What It Detects: The page doesn't explicitly list specific detection methods like headless browsers. Instead, it states the script uses "client-side signals" to determine request authenticity and runs on every request to your website.

First Request Limitation: "The first request from a new client to your website or application will generally not have JavaScript Detections data (cf.bot_management.js_detection.passed = false). This is because Cloudflare needs at least one HTML request before injecting JavaScript Detection and issuing the cf_clearance cookie."

Important Note: Enforcement against bots does not occur automatically—you must create custom WAF rules using the js_detection.passed field to actually block or challenge failed requests.