HTTPS is an HTTP extension whose main purpose is to protect data during transportation by encrypting the received information based on SSL standards. This protection is necessary when working with confidential information, which may be personal (name, date of birth, etc.) and payment data (information about cards/bank accounts) of users.
Before making any financial transactions on the Internet, you should make sure that the data is secure. You need to check if the site uses HTTPS. Most modern browsers themselves prompt users about the security of the connection. For manual verification, you need to make sure that the address bar of the browser says “https” and not “http“. Most importantly to perform this check on the payment pages. It is “https” that means no one can take over your personal information.