CVV2 is also called security code, verification code and verification code. The security code of a credit card is equivalent to the ID card of a credit card and can be used for consumer transactions.

It is located in the last three digits of the credit card number, and the last three digits we usually see on the back of the credit card are actually CVV2.

It is very important to protect CVV2, because once others know your security code, ID number, card number and name, it is equivalent to indirectly owning this credit card. Never tell others!

You don't need a password to shop on overseas websites. As long as the buyer provides the account number and security code, the transaction can be completed. In China, there are also merchants signing contracts with banks, but you don't need a credit card password, you only need a security code to complete the telephone transfer.

So be sure to take good care of your credit card, and don't let it leave your sight when you spend it, so as to avoid others remembering your credit card account number and security code.