Hello! CVV2 is the 3-digit verification code on the signature strip on the back of the credit card, and the expiration date is also on the "Credit Card". The valid year and month on the front of the credit card includes the credit card security code, a seven-digit number, in the upper right corner of the signature column on the back of the bank card.

The security code of the bank card, also called the CVV2 code. Generally, when using online banking, you will be asked to enter the last three digits of the CVV2 code. The bank's security code is very important, so cardholders must protect it.

Cvv’s full name is Card VerificationValue. Simply put, it is a string of additional codes printed on the back of the credit card. It is usually written in the 2-track user-defined data area of ??the card’s magnetic stripe. It usually consists of 3 or 4 digits. composed of digits. Under normal circumstances, bank cards can be used for consumption by swiping the card. Then this consumption method is also the safest. After all, almost all bank cards are now chip cards, and the risk of being stolen is also greatly reduced. If you still have a magnetic stripe card, it is recommended to replace it with a chip card as soon as possible.

Under normal circumstances, most people will bind their bank cards to various payment software, and then when paying, just scan the QR code and select the bank card. In fact, this payment method is considered very safe. But if you choose to pay via online banking, the risk of being swiped is very high. When using online banking to shop, you generally only need the card number, security code and verification code to complete the transaction. Moreover, some overseas shopping websites can make payment successfully without verification code, so this risk is very high. Especially credit cards, because credit cards have overdraft and over-limit functions, you can still make successful purchases even if you have no money in the card. But bank cards are different. If there is no money in the bank card, the other party cannot steal it no matter what. Therefore, when making online purchases with a credit card, you only need the card number, expiration date and security code, and no verification code is required to make a successful payment. Therefore, the security code of your credit card must be protected. Remember not to expose your bank card information in public places or online. Although you think it is nothing, if it is used by illegal elements, it is normal for information to be leaked and bank cards to be stolen, so you must pay attention. Let’s summarize: The security code of the bank card, also called the CVV2 code, is a seven-digit number in the upper right corner of the signature column on the back of the bank. But when paying, you generally only need the last three digits of the security code. Moreover, when making online purchases and payments, a security code is required, so be sure to protect your bank card information and do not post photos of your bank cards online, otherwise the information will be easily leaked.