When you use a credit card for purchases, retailers and businesses may ask for its expiration date and security code (also known as your card verification code or CVC/CVV) to ensure it’s valid.

A credit card security code is a three- or four-digit number that’s found only on a physical credit card.

It can be a pain having to type in your credit card number and CVC code whenever you’re shopping online. However, saving this information in your browser with insufficient security to conceal it ...