HTTP means that the communications between your browser and the website are not encrypted. They can potentially be seen by other people.
HTTP is an insecure connection – your communications are not encrypted.
Whenever you see HTTPS instead it means that you are one secure website and that all the communications between your browser and the website are encrypted.
HTTPS is a secure connection – your communications are encrypted.
HTTPS is often used for confidential transactions such as online banking and online shopping.
Most website such as Internet Explorer, Opera, Chrome and Firefox will show a padlock icon in the address bar to visually indicate that you are on an HTTPS website.
You should enter passwords and other private information on a website that use the HTTPS protocol.