CVV Number: What It Is and How It Works


CVV (Card Verification Value) number is a three- or four-digit security code found on the back of credit and debit cards. It acts as an extra layer of security when making online or phone purchases.


The CVV number helps prevent fraud by verifying that the cardholder is in possession of the physical card during a transaction.


The CVV number is typically located on the back of the card, either printed in reverse italic or in a separate panel from the card number.

Use in Online Transactions

Online merchants require the CVV number as a way of verifying the cardholder's identity during a transaction. This helps prevent fraudulent purchases made with stolen card information.

CVV2 and CVC2

 CVV2 and CVC2 (Card Verification Code 2) are terms used interchangeably with CVV to refer to the security code on a credit or debit card.


CVV2 and CVC2 are more secure versions of CVV, but all three refer to the same concept: a security code on a credit or debit card.

Not a Guarantee of Security

While the CVV number is an extra layer of security, it's not a guarantee against fraud. For example, if a thief has the card number, expiration date, and CVV number, they can still use the card for fraudulent purchases.

Importance of Keeping CVV Number Safe 

It's important to keep the CVV number safe and not to share it with anyone, as it's a key piece of information that can be used for fraudulent purchases.