Symantec operates a series of Certificate Authorities under various brand names, including Thawte, VeriSign, Equifax, GeoTrust and RapidSSL.
IF you have one of those SSL Certificate brands installed (like me ), browse any SSL secured website page using Google Chrome. > Right-click, then "Inspect", > Check for any Warning Message in the "Console" at bottom of screen.
---------------------------------------- You may see this Warning ...
The SSL certificate used to load resources from https:// yourdomain.com will be distrusted in M70. Once distrusted, users will be prevented from loading these resources. See https://g.co/chrome/symantecpkicerts for more information.
Click the link above to read the "Google Security Blog" article titled "Chrome’s Plan to Distrust Symantec Certificates". ----------------------------------------
Symantic have issued numerous certificates that did not comply with the industry-developed CA/Browser Forum Baseline Requirements. This has caused the Google Chrome team to lose confidence in the trustworthiness of Symantec’s infrastructure, and as a result, the certificates that have been or will be issued from it.
Starting with Chrome 66, Chrome will remove trust in Symantec-issued certificates issued prior to June 1, 2016. Chrome 66 is currently scheduled to be released to Chrome Beta users on March 15, 2018 and to Chrome Stable users around April 17, 2018.
Not really a big deal though . Symantec sold those brands to Digicert last year and we've been issuing certificates off the Digicert root for several months now. All it really means is you might need to do a free reissue on the certificate, or renew a bit early. We're finding that in practice this really only impacts a subset of certificates that expire in the 4th quarter this year, and in most cases renewing three months early (no loss of time for that) will be sufficient to keep Chrome happy. That will apply to your site too, renew before Sept 13 and you'll be fine
Thanks Peter, I have not received any advice from my Certificate Provider about this issue, which you would reasonably expect by now. So the post is here for the information of other Webmasters who may be affected and do need to check.
If you have a directive in the .htaccess file, that forces the user to https, then it's impossible to get to a non https page, so I don't think you could get a duplicate content penalty for that. I would go into GWT and make sure you have setup a property for the https version of your site.