The credit card cvv2 code is at the signature of the credit card. It is often expressed in the form of XXXX125, that is, the first four numbers, then a space, and then the next three numbers. These three numbers are our credit card cvv2 code. Take the Postal Savings Bank as an example. The Postal Savings Bank's credit card CVV2 code will be printed on the upper right corner of the back of the credit card. Here you can see that there are 7 numbers recessed into the card. Generally, the first 4 digits are the credit card number. The last four digits, and the last three digits are the cvv2 code.

The CVV2 code of a credit card is its security code. This code is often used for security authentication in non-offline transactions such as online transactions, telephone transactions, card opening and activation, etc. Therefore, at some levels, the CVV2 code is as important as the credit card password. Criminals can use the credit card number, expiration date and the three-digit CVV2 code on the back of the card to steal consumers' credit cards.

If the CVV2 code is accidentally leaked, it is recommended to call the bank service hotline immediately to report the loss, and then go to the bank to handle the card replacement service to prevent the credit card from being stolen.

The credit card number is equivalent to the credit card’s ID card. We can use this password to conduct consumer transactions. No password is required for shopping on overseas websites, as long as

Under normal circumstances, in order to protect the password, do not easily disclose credit card information to others or lend the credit card to others or friends. The resulting losses will be borne by the individual. If you are worried about the security code being exposed, you can use a piece of tape to cover the security code.