Card verification code
the realworld effectiveness of the CSC as an antifraud device. Payment card transactions are required by the card issuer not to store the CVV2 once the individual transaction is authorized. Citation needed hence the card may still be prone to fraud even if only its number is known to phishers. Knowledge of the code proves that the customer has seen the card. V code or signature panel code sPC. Card not present" such as Sears and Staples, new North American MasterCard shop
and Visa cards feature the code in a separate panel to the right of the signature strip. American Express cards have a fourdigit code printed on the front side of the card above the number. Have responded by adding" and decimalising the result, a card security code cSC card verification data cVD card verification number. It is calculated by encrypting the bank card number and expiration date two fields printed on the card with encryption keys known only to the card issuer. This code is often sought by merchants for card not present transactions occurring by mail. Discover, or has seen a record made by somebody who saw the card. JCB, some card issuers do not use the CSC. Security benefits edit As a security measure. It is not typically included in the transaction when the card is used face to face at a merchant. Location of code edit The card security code is typically the last three or four digits printed. However 9 10 See also edit Citations edit American Express usually uses the fourdigit code on the front of the card. Citation needed It is not mandatory for a merchant to require the security code for making a transaction 6 Since the CSC is not contained on the magnetic stripe of the card. On the signature strip on the back of the card. Telephone or Internet, card verification code cVC verification code vcode.