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 authorization key is a secure code used to process transactions, confirming purchases and preventing fraud ...

Over the past 20 years, Card Security Codes (also known as CVC2, CVV2) usage has greatly expanded from confirming genuine cardholders to securing eCommerce transactions, eWallet enrollments, and ...

Cardholders can take these steps to ensure the security of their credit cards. The best and worst of popular prepaid credit cards. Getty Images — -- intro: Credit card security has been in the ...