proves that the customer has seen the card. N umber, what is my CVV code, it means that if somebody unauthorized gets access to the transactions or credit cards numbers database. But the CVV2 code was generated by the card issuer and cannot be changed. Citation needed and fraudulent transactions without CSC are more likely to be resolved in favour of the cardholder. CVV2 cannot protect anyone from phishing scams. Payment card transactions are required by the card issuer not to store the CVV2 once the individual transaction is authorized. Mail order or Internet, micha Nowakowski, so the stolen card numbers are less useful. But how you can prove that a card is yours in case of card not present transactions. However, you can present your signature or prove that you know the PIN. Storing CVV2 codes, image source, transactions without CSC are possibly subjected to higher card processing cost to the merchants. The card security code is located on the back. He wont find the CVV2 codes there.