China is now blocking all encrypted HTTPS traffic using TLS 1.3 and ESNI Block was put in place at the end of July and is enforced via China's Great Firewall internet surveillance technology August 8, 2020 https://www.zdnet.com/article/china...crypted-https-traffic-using-tls-1-3-and-esni/ Exposing and Circumventing China's Censorship of ESNI
Russia wants to ban the use of secure protocols such as TLS 1.3, DoH, DoT, ESNI Amendment to IT law would make it illegal to use encryption protocols that fully hide the traffic's destination September 22, 2020 https://www.zdnet.com/article/russi...ecure-protocols-such-as-tls-1-3-doh-dot-esni/
Academics discover hidden layer in China’s Great Firewall October 2, 2021 https://therecord.media/academics-discover-hidden-layer-in-chinas-great-firewall/ Research paper: "Even Censors Have a Backup: Examining China’s Double HTTPS Censorship Middleboxes" (PDF): https://geneva.cs.umd.edu/papers/foci21.pdf