The credit card cvv2 code is behind the signature on the back of the card. The credit card cvv2 code is very important. It is necessary to ensure its safety and avoid leakage. It is best to use opaque thin tape to stick it. Credit card cvv2 code is usually called a security code.

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1. Credit card cvv2 code is generally used when using credit cards for consumption abroad. This is also the reason why credit cards are stolen abroad. You don’t need to use a password to pay with a credit card abroad. You only need to know the credit card CVV2 code, card number, and expiration date to complete the payment.

2. The security code of a credit card is unique. If the credit card expires, the security code will change after changing the credit card. Even if the credit card number does not change, the security code needs to be changed. It should be noted that if this security code is erased and forgotten later, it will not be retrieved through any means. The bank will not record it.

3. The credit card CVV2 code is generally not used when using credit cards for transactions in China. If the credit card is not used domestically, the credit card CVV2 code can be scratched off. This can ensure the safety of using the card, but cannot Forgot your credit card transaction password and inquiry password.

4. The credit card cvv2 code is at the signature of the credit card. It is often expressed in the form of XXXX 125, that is, the first four numbers, then a space, and then three numbers. These three numbers are our The cvv2 code of this credit card. 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, phone transactions, card opening and activation, etc. Therefore, on some levels, the CVV2 code is as important as the credit card password. Criminals can steal consumers' credit cards by providing the credit card number, expiration date and the three-digit CVV2 code on the back of the card.