The credit card cvv2 code is behind the signature on the back of the card. The credit card cvv2 code is very important. To ensure its safety and avoid leakage, it is best to stick it with opaque thin tape. Credit card cvv2 code will also be called security code in peacetime.

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1. Credit card cvv2 code is generally used when using credit cards abroad, which is also the reason why credit cards are stolen abroad. When you use a credit card to pay abroad, you don't need a password. You only need to know the cvv2 code, card number and expiration date of the credit card to complete the payment.

2. The security code of the credit card is unique. If the credit card expires, the security code will change after the credit card is replaced, even if the credit card number has not changed, this security code needs to be changed. It should be noted that if this security code is erased, it will be forgotten in the later stage, and the silver

line will not be recovered.

3. Credit card cvv2 code is generally not used when using credit cards for transactions in China. If the credit card is not used in China, the cvv2 code of the credit card can be scraped off at this time, which can ensure the safety of using the card, but we must not forget the transaction password and inquiry password of the credit card.

4. The credit card cvv2 code is located at the signature of the credit card. It is often expressed in the form of XXXX 125, that is, the first four digits, then a space, and then three digits, which are the cvv2 code of our credit card. The cvv2 code of a credit card is its security code, which is often used for security authentication in off-line transactions such as online transactions, telephone transactions and card opening activation. Therefore, in some aspects, the

CVV2 code is as important as the credit card password, and criminals can steal the credit card of consumers by providing the credit card number, expiration date and the three-digit CVV2 code on the back of the card.