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