SSL is a security protocol that provides privacy, authentication, and integrity to Internet communications. SSL eventually evolved into Transport Layer Security (TLS)
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What Is TLS?
What Is Web Application Security?
Brute Force Attack
SSL, or Secure Sockets Layer, is an encryption-based Internet security protocol. It was first developed by Netscape in 1995 for the purpose of ensuring privacy, authentication, and data integrity in Internet communications. SSL is the predecessor to the modern TLS encryption used today.
There have been several iterations of SSL, each more secure than the last. In 1999 SSL was updated to become TLS.
SSL is the direct predecessor of another protocol called TLS (transport layer security). In 1999 the Internet Engineering Task Force (IETF) proposed an update to SSL. Since this update was being developed by the IETF and Netscape was no longer involved, the name was changed to TLS. The differences between the final version of SSL (3.0) and the first version of TLS are not drastic, the name change was applied to signify the change in ownership.
Since they are so closely related the two terms are often used interchangeably and confused. Some people still use SSL to refer to TLS, others use the term ‘SSL/TLS encryption’ because SSL still has so much name recognition.
SSL has not been updated since SSL 3.0 in 1996 and is now considered to be deprecated. There are several known vulnerabilities in the SSL protocol and security experts recommend discontinuing its use. In fact, most modern web browsers no longer support SSL at all.
TLS is the up-to-date encryption protocol that is still being implemented online, even though many people still refer to it as ‘SSL encryption’. This can be a source of confusion for consumers shopping for security solutions. The truth is that any vendor offering ‘SSL’ these days is almost certainly providing TLS protection, which has been an industry standard for nearly twenty years. But since many folks are still searching for ‘SSL protection’, the term is still featured prominently on many product pages.
Cloudflare offers one-click setup for the latest SSL encryption on every website and service on our platform.
For a more in-depth explanation of how SSL/TLS encryption works, see What Is TLS?
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