GreatFire

Explore by mechanism & status

Browse every tested URL by how the Great Firewall interferes with it, or by the verdict it currently carries. Click once to require, again to exclude.

Interference mechanism

Current status

Kind of URL

Click any filter: once to require it (✓), twice to exclude it (✕).

20 URLs match
http://citizenlab.caDNS poisoningas of 2026Blockedhttps://citizenlab.ca/2017/07/%E5%8B%BF%E5%BF%98%E6%99%93%E6%B3%A2%EF%BC%9A%E5%BE%AE%E4%BF%A1%E5%92%8C%E5%BE%AE%E5%8D%9A%E9%92%88%E5%AF%B9%E5%88%98%E6%99%93%E6%B3%A2%E9%80%9D%E4%B8%96%E7%9A%84%E4%BF%A1%E6%81%AF%E5%AE%A1%E6%9F%A5DNS poisoningTimeout / silent dropBlockedhttps://citizenlab.caDNS poisoningTimeout / silent dropConnection failedBlockedhttps://citizenlab.ca/2015/04/chinas-great-cannonDNS poisoningTimeout / silent dropas of 2026Blockedhttps://citizenlab.ca/2017/11/managing-message-censorship-19th-national-communist-party-congress-wechatDNS poisoningTimeout / silent dropas of 2026Blockedhttps://citizenlab.ca/2016/02/%E7%A0%94%E7%A9%B6%E5%8F%91%E7%8E%B0%E7%99%BE%E5%BA%A6%E6%B5%8F%E8%A7%88%E5%99%A8%E5%AD%98%E5%9C%A8%E5%AE%89%E5%85%A8%E4%B8%8E%E9%9A%90%E7%A7%81%E9%97%AE%E9%A2%98DNS poisoningas of 2026Blockedhttps://citizenlab.ca/tag/chinaDNS poisoningTimeout / silent dropas of 2026Blockedhttps://citizenlab.ca/2017/07/analyzing-censorship-of-the-death-of-liu-xiaobo-on-wechat-and-weiboDNS poisoningas of 2026Blockedhttps://deibert.citizenlab.caDNS poisoningBlockedhttps://citizenlab.ca/tag/nso-groupDNS poisoningTimeout / silent dropConnection failedas of 2026Blockedhttps://citizenlab.ca/2022/01/cross-country-exposure-analysis-my2022-olympics-app/DNS poisoningTimeout / silent dropConnection failedTLS handshake failureas of 2026Blockedhttps://citizenlab.ca/2016/11/wechat-china-censorship-one-app-two-systems/DNS poisoningBlockedhttps://citizenlab.ca/2023/08/vulnerabilities-in-sogou-keyboard-encryption/Timeout / silent dropTLS handshake failureas of 2026Blockedhttps://citizenlab.ca/feed/DNS poisoningTimeout / silent dropas of 2026Blockedhttps://citizenlab.ca/wp-content/themes/citizenlab-wp-theme/library/images/CL-logo-3-headed.pngDNS poisoningTimeout / silent dropas of 2026Blockedhttps://citizenlab.ca/wp-content/themes/citizenlab-wp-theme/library/images/DNS poisoningTimeout / silent dropBlockedhttps://citizenlab.ca/2024/02/paperwall-chinese-websites-posing-as-local-news-outlets-with-pro-beijing-contentDNS poisoningTimeout / silent dropas of 2026Blockedhttps://citizenlab.ca/2024/10/should-we-chat-too-security-analysis-of-wechats-mmtls-encryption-protocolDNS poisoningTimeout / silent dropConnection failedas of 2026Blockedhttps://www.citizenlab.caDNS poisoningTimeout / silent dropas of 2026Blockedhttp://www.citizenlab.caDNS poisoningas of 2026Blocked
1–20 of 20

Snapshot from 2026-08-24. Each URL's status is the same 90-day verdict its own page headlines.