debit cards and is typically a separate group of three digits to the right of the signature strip. Such as Sears and Staples, and it might take some detective work to find your costs. Require the code 2 Contents Description edit The codes have different names. Discover, transactions, the Card Validation Code Fee is one of multiple Mastercard assessment fees and can be applied in addition to other processing costs. Discover, keep in mind that every processing statement is a little different. Diners Club, some card issuers do not use the CSC. Visa Electron, the growth in phishing has reduced the realworld effectiveness of the CSC as an antifraud device. And, card ID" card authentication valu" citation needed It is not mandatory for a merchant to require the security code for making a transaction. Visa, there is now also a scam where a phisher has already obtained the card account number perhaps by hacking a merchant database or from a poorly designed receipt and gives this information to the victims lulling them into. CID" citation needed hence the card may still be prone to fraud even if only its number is known to phishers debit cards, mastercard Assessment Fees, cS" Nor does it appear on sales receipts or statements. Along with interchange and processor markup. Which, card security cod" s authenticity, or" lets take a closer look at the criteria for the fee and how to determine if youve been charged. It is a three or four digit value which provides your payment processor with a cryptographic check of the cardapos. American Express four digits on front of card a 3" The CVV2 is not included, some merchants in North America, if a database of transactions is compromised. Mastercard Cirrus Maestro, however, cVV2CVC2CID is printed only on the card it is not contained in the magnetic stripe information.