Effective July 2018, Google’s Chrome browser will mark non-HTTPS sites as ‘not secure’
Google has been pushing webmasters to change websites to HTTPS for years now. They even gave a small rankings boost to HTTPS sites.
February 2018 Google published this announcement:
“For the past several years, we’ve moved toward a more secure web by strongly advocating that sites adopt HTTPS encryption. And within the last year, we’ve also helped users understand that HTTP sites are not secure by gradually marking a larger subset of HTTP pages as ‘not secure’. Beginning in July 2018 with the release of Chrome 68, Chrome will mark all HTTP sites as ‘not secure’“.