SHA-1 Cutoff Could Block Millions of Users From Encrypted Websites (csoonline.com)

itwbennett writes: As previously reported on Slashdot, browser makers are considering an accelerated retirement of the older and increasingly vulnerable SHA-1 function. But Facebook and CloudFlare are warning some 37 million users of old browsers and operating systems that don't support SHA-2 will be left without access to encrypted websites. The majority of them are located in some of the "poorest, most repressive, and most war-torn countries in the world," CloudFlare's CEO Matthew Prince said Wednesday in a blog post. Facebook has solved this problem by building a mechanism that allows its certificates to be switched automatically based on the browser used by the visitor.