The Secure Sockets Layer (SSL) protocol was first introduced by Netscape in 1994.
Version 1.0 of SSL was never released because it had serious security flaws.
The first official release of SSL, version 2.0, was out in 1995 (poor security) - deprecated in 2011
The final version of the SSL protocol, SSL 3.0, was released in November 1996. - deprecated by IETF in June 2015
IETF takes over the project and releases TLS 1.0 (based on SSL 3.0)
TLS 1.1 (RFC 4346) was a minor update to TLS 1.0 released in April 2006.
TLS 1.2 (RFC 5246) was released in August 2008.
The current version of TLS, TLS 1.3, was released in August 2018 (RFC 8446). - removes SHA-1, MD5, RC4, DES, and 3DES