Wireless validating identity unable to find certificate
As stated in the RFC, "the differences between this protocol and SSL 3.0 are not dramatic, but they are significant enough to preclude interoperability between TLS 1.0 and SSL 3.0".
TLS 1.0 does include a means by which a TLS implementation can downgrade the connection to SSL 3.0, thus weakening security.
SSL 2.0 was prohibited in 2011 by RFC 6176, and SSL 3.0 followed in June 2015 by RFC 7568.
However, applications generally use TLS as if it were a transport layer, Early research efforts towards transport layer security included the Secure Network Programming (SNP) application programming interface (API), which in 1993 explored the approach of having a secure transport layer API closely resembling Berkeley sockets, to facilitate retrofitting pre-existing network applications with security measures.
Version 1.0 was never publicly released because of serious security flaws in the protocol; version 2.0, released in February 1995, contained a number of security flaws which necessitated the design of version 3.0.
Released in 1996, SSL version 3.0 represented a complete redesign of the protocol produced by Paul Kocher working with Netscape engineers Phil Karlton and Alan Freier, with a reference implementation by Christopher Allen and Tim Dierks of Consensus Development. The 1996 draft of SSL 3.0 was published by IETF as a historical document in RFC 6101.
Attempts have been made to subvert aspects of the communications security that TLS seeks to provide and the protocol has been revised several times to address these security threats (see § Security).
Developers of web browsers have also revised their products to defend against potential security weaknesses after these were discovered (see TLS/SSL support history of web browsers).