Tens of thousands of websites are going to find themselves labeled as unsafe unless they switch out their HTTPS certificate in the next two months.
Thanks to a decision in September by Google to stop trusting Symantec-issued SSL/TLS certs, from mid-April Chrome browser users visiting websites using a certificate from the security biz issued before June 1, 2016 or after December 1, 2017 will be warned that their connection is not private and someone may be trying to steal their information. They will have to click past the warning to get to the website.
The change will come in build 66 of Chrome – due for public release on April 17 – and the problem will get even bigger on October 23 when build 70 is released and all Symantec certificates will be listed as not being trustworthy.
Source: The Register