CVV2 and Credit Card Security
An important new security
feature for online and other "card-not-present" transactions now appears
on recently issued Visa, Mastercard, Discover, and
American Express credit cards. This new feature, called CVV2, is
a three-or four-digit value which provides a cryptographic check of the
information embossed on the card. Note: CVV2 is now used at most major
e-commerce websites, including Amazon.com. It protects the credit card holder
Visa, Mastercard, and Discover:
The CVV2 three-digit value is printed on the signature panel on the
back of your credit card immediately following the card account number.
The CVV2 four-digit value is printed on the front of your credit card
above and to the right of the card account number.
The CVV2 value helps validate two things:
The customer has an actual credit card in his/her possession.
The card account is legitimate.
CVV2 is only printed on your credit card — it is not contained
in the magnetic stripe information, nor does it appear on sales receipts.