Chrome, Firefox and Google Search are driving the internet to HTTPS
HTTP (Hypertext Transfer Protocol) has been in use by the World-Wide Web global information initiative since 1990.
HTTPS (HTTP Secure) is the secure version and aims at assuring confidentiality and security of exchanges. With the communication being encoded, the protocol protects not only from eavesdropping, but also from data alteration.
Until recently, a website using the HTTPS had a positive visual indicator, usually a padlock next to the URL. Where a problem arose, the padlock would be shown as broken or crossed out.
In December 2014, the Chrome security team published a proposal to all web browser vendors: websites using the non-secure version of the protocol will have to be clearly marked as non-secure by the web browsers.
This proposal is now being implemented led by Chrome, Firefox and Google - the use of https is now a ranking factor.