CVV2 is an important security feature for credit card transactions on the Internet and over the phone. "CVV" stands for "Card Verification Value"
It is the three-digit number printed in the signature space on the back of most credit cards, such as Visa and Mastercard cards. The CVV2 number is always the last group of numbers in the signature space on the back of the card. It is not part of your regular credit card number.
The CVV2 number enhances fraud protection and helps to validate two things:
By helping to prevent credit card fraud, the CVV2 number keeps costs down for everyone.