Censorship

RU

• Russia disallowing CDNs in order to block ECH: https://github.com/net4people/bbs/issues/417
• https://therecord.media/russia-blocks-thousands-of-websites-that-use-cloudflare-service

CN

• Not blocking ECH currently
• Do they need to block ECH at all?
  • Do they control the clients?
  • Do they need to block anything because they have other means (Social Credits)?

KR

• Blocking by SNI:
  • https://www.bleepingcomputer.com/news/security/south-korea-is-censoring-the-internet-by-snooping-on-sni-traffic/
  • https://www.technadu.com/south-korea-extend-site-blocking-snooping-sni/58125/
• Workaround: VPNs and ESNI
  • ESNI was removed from browses, ECH follows but harder to adopt