Discover how credit card validation codes work and protect against fraud. Learn about their placement, security role, and examples to secure online transactions.

A credit card CVV, or card verification value, is a three- or four-digit security code that appears on your credit card and is used to prevent fraud. Many or all of the products on this page are from ...

Millions of people use credit and debit cards daily to make purchases in stores and online. You’re probably familiar with the “signature” field on the back of the card. Maybe you’ve even heard the ...