Challenges in Adapting ECH in TLS for Privacy Enhancement over the Internet. (arXiv:2207.01841v1 [cs.CR])

Security and Privacy are crucial in modern Internet services. Transport Layer
Security (TLS) has largely addressed the issue of security. However,
information about the type of service being accessed goes in plain-text in the
initial handshakes of vanilla TLS, thus potentially revealing the activity of
users and compromising privacy. The ``Encrypted ClientHello'' or ECH overcomes
this issue by extending TLS 1.3 where all of the information that can
potentially reveal the service type is masked, thus addressing the privacy
issues …

challenges ech internet privacy tls