A heated discussion between Google and Symantec regarding the validity of some SSL certificates proceeded throughout the whole last year. 13 month-long grace period was given to allow Symantec to do some internal cleanup, rebuild their infrastructure and deal with the compliance issues. But In the end, Google announced the plans to distrust all Symantec certificates issued prior to the infrastructure overhaul.
How it will work out, how this all will impact common Internet users and why April 17, 2018 can be the big day for your site? Read more — https://itsvit.com/blog/google-distrust-symantec-ssl-certificates-important/