If there is no cvv code, you don't need to fill it in, which will not affect the use. Domestic savings cards don't have cvv codes, only international savings cards and credit cards have cvv codes. Users can confirm the card type, and cvv code is mainly used for overseas online shopping without card payment.

The cvv code of a credit card, also called the security code, refers to the security code when a credit card pays with a card. If you don't know where the ccv code is, you can open the signature on the back of the credit card. The last three digits in italics are ccv codes.

What should I do if the credit card CVV code is leaked?

Once the cvv code of the credit card is leaked, you can apply to the cardholder's bank to temporarily freeze the credit card to prevent it from being stolen, and then apply to the bank to report the loss of the credit card and reissue a new card. The card number of the new card is different from the security code of CVV. After the new card comes down, you can cover the CVV code on the back with a sticker and don't reveal the credit card information.