IETF officially deprecated TLS 1.0 and TLS 1.1
The Internet Engineering Task Force (IETF) has announced that TLS 1.0 and TLS 1.1 are officially abandoned. The announcement states that TLS 1.0 (RFC 2246) and TLS 1.1 (RFC 4346) have been officially deprecated. These versions lack support for current and recommended encryption algorithms and mechanisms, and many governments and industries now require TLS applications to avoid using these old TLS versions.
TLS 1.2 became the IETF recommended version in 2008, so the IETF believes that enough time has been reserved for users to get rid of the dependence on the old version of TLS. It also stated that removing support for older versions can reduce the attack surface, reduce the chance of misconfiguration, and simplify the maintenance of libraries and products.
TLS 1.0 was released in 1999, and nearly 20 years after its release, about 2018, the IETF has begun to discuss the deprecation of TLS 1.0 and 1.1. At that time, several mainstream browsers also announced plans to abandon TLS 1.0 and TLS 1.1 in 2020.
TLS 1.3 was released in August 2018. Its breakthrough improvements include a faster handshake to speed up the connection, simplified encryption methods supported, and better speed and performance than TLS 1.2.
