Microsoft, Google, and Mozilla began phasing out trust for SHA-1 certificates in 2016. Here is a historic timeline of those events: November 2014 – SHA-1 SSL Certificates expiring any time in 2017 will show a warning in Chrome. December 2014 – SHA-1 SSL Certificates expiring after June 1, 2016, will show a warning in Chrome. January 2015 – SHA-1 SSL Certificates expiring any time in 2016 will show a warning in Chrome. December 2015 – SHA-1 SSL Certificates issued after January 1, 2016, will show the "untrusted connection" error in Firefox. January 2016 – SHA-1 SSL Certificates issued after January 1, 2016, will show a certificate error in Chrome. Certificate criteria: signed with a SHA-1-base signature, issued after January 1, 2016, and chained to a public CA. January 1, 2017 – Microsoft, Google, and Mozilla will end trust for all SHA-1 SSL Certificates. Mozilla and Google say it is feasible to move this date up to July 1, 2016, in light of recent attacks on SHA-1. Microsoft says it is feasible to move this date up to as early as June 2016, in light of recent attacks on SHA-1.