[Oct 16, 2018]
All major web browsers, including Google Chrome, Apple Safari, Microsoft Edge, Internet Explorer, and Mozilla Firefox, altogether today announced to soon remove support for TLS 1.0 (20-year-old) and TLS 1.1 (12-year-old) communication encryption protocols.
Developed initially as Secure Sockets Layer (SSL) protocol, Transport Layer Security (TLS) is an updated cryptographic protocol used to establish a secure and encrypted communications channel between clients and servers.
There are currently four versions of the TLS protocol—TLS 1.0, 1.1, 1.2 and 1.3 (latest)—but older versions, TLS 1.0 and 1.1, are known to be vulnerable to a number of critical attacks, such as POODLE and BEAST.
Since TLS implementation in all major web browsers and applications supports downgrade negotiation process, it leaves an opportunity for attackers to exploit weaker protocols even if a server supports the latest version.
Cyber Security Tips:
You can also manually disable older TLS versions on Google Chrome by opening Settings → Advanced Settings → Open Proxy Settings → Click ‘Advanced’ Tab → Under ‘Security’ section uncheck TLS 1.0 and 1.1 and then save.