And TLS 1.1 was an effective cryptographic protocol for several years. TLS 1.0 was followed by TLS 1.1, improving its security offering and addressing a number of newly discovered weaknesses in the previous version.

And while TLS 1.0 was different enough from SSL as to make interoperability impossible, TLS 1.0 was designed with a mechanism allowing it to fall back on SSL 3.0 when needed - at reduced security effectiveness. Originally envisioned as another SSL protocol upgrade, TLS instead grew into something unique enough to deserve its own designation. In late 2014, the Google Security Team detected a major security flaw in SSL 3.0, necessitating a new approach to communication encryption. Unfortunately, as technology improved, so did the capabilities of various online threat actors. This final SSL version became the standard for internet encryption for nearly two decades.

SSL 1.0 was flawed, and never saw general release, but SSL 2.0 followed shortly afterward, and was then superseded by the much improved SSL 3.0. SSL 1.0, 2.0, and 3.0īack in 1995, when the internet was still figuring itself out, Netscape decided to address growing concerns over internet security by creating a form of encryption that would allow data to travel safely without the risk of being intercepted - Secure Socket Layers. But what is TLS 1.2, and how does it work? To answer that, let’s first take a quick look at the history of cryptographic protocols. And with TLS 1.0 and 1.1 deprecated as of the end of 2020, organizations and web hosts who wish to ensure data safety need to make the move to support TLS 1.2 across all of their deployments. SSL has long been defunct - replaced by TLS and its subsequent versions - TLS 1.0, TLS 1.1, and TLS 1.2. The most famous of these are Secure Socket Layers (SSL) and Transport Layer Security (TLS). To prevent eavesdroppers, hackers, and other cybercriminals from accessing sensitive data as it moves through the internet, various cryptographic protocols have been introduced.

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