As of July 2018, Google’s Chrome web browser will display non-HTTPS sites as ‘not secure’. This is a victory for the IT security conscious, and users concerned about the privacy of their data.
Google has been advocating for webmasters to switch over to the HTTPS protocol, and have been encouraging this by indexing secure pages (HTTPS) over unsecured pages (HTTP), which will increase prominence and awareness for internet security and privacy. This prevents outside monitoring by encrypting your browser activity data and verifying website addresses without any third-party interference. It means all communications between your browser and the website are encrypted.
HTTP sites will still be accessible and functional from the Chrome browser, however, they will be marked as unsecured. If you are a webmaster or want more information please visit the advisory article for secure certificate authorization here