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

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.

Every credit card has a card security code printed on it. It may be called a CSC, a card verification value (CVV or CV2), card verification code (CVC) or card code verification (CCV), but you need ...

It doesn't matter what you call them -- a card security code (CSC), card verification value (CVV or CV2), card verification code (CVC) or even a card.