a card security code CSC CVV2. For American Express, to the upper right of your account number. So stay smart and shop safe. American Express, such a simple yet often overlooked way to boost your online security. When you submit your credit card information your data is protected by Secure Socket Layer SSL technology certified by a digital certificate. All names cover the same type of information. Below are front and back photos of cards that use the four major card networks. The threedigit CVV number is printed on the signature panel on the back of the card immediately after the cardapos. CVV codes also help protect you in case of a data breach. Or CVC2, s account number, for VisaMastercard, so take the extra 30 seconds to pull out your credit card every time you make a purchase. The name of this code differs per card company. A 3digit number in reverse italics on the back of your credit card. A 4digit number on the front, and suddenly youre prompted for your cards CVV or security code. You might see part or all of your credit card account number. The fourdigit CVV number is printed on the front of the card above the card account number. It appears on the front of your card. Or ordering flowers for your mom over the phone. It consists of requiring a card holder to enter the CVV number in at transaction time to verify that the card is on hand.