USE HTTPS WHEN LOGIN TO SOCIAL WEBSITES

When login into Face book login page, it always change the protocol from HTTP to HTTPS (also known as Hyper Text Transfer Protocol with Secure Socket Layer) before login.

This is to ensure when clicked the submit button, username and password transmitted across the network to the Facebook server are secured.

When browsing using HTTP, the data sending from browser to the server is not encrypted.

But when using HTTPS, the data will be encrypted with the server public key and only the server can decrypt
back the data with its own private key.

(MORE: Online shopping and Online banking websites such as mahabank.com using this protocol as default to ensure the security of their customer login information. Like mahabank.com, it using 1024 bits key length for the public key and private key same like with Face book)