The net online gate behemoths have decided to completely stop using RC4 cipher from 2016.
For Firefox, that means version 44, currently scheduled for release on Jan 26,notedMozillas Richard Barnes.
Microsoft has made the official announcement yesterday.
Microsoft had intended to deprecate the SHA-1 algorithm in 2013.
Internet Explorer does not offer RC4-based cipher suites during the initial TLS/SSL handshake as the first option.
source: www.techworm.net
