Credit card security code is a security code for credit cards when conducting online or telephone transactions. It is usually a 3 or 4-digit number printed on the credit card, and the location of the printing will vary on different types of cards. It is often used to prevent credit card fraud by verifying that the payer owned the credit card at the time of the transaction.

How to protect credit card security code

1. Cover the security code when swiping the card. In some transaction scenarios, payment can be completed with the credit card number, validity period and security code. Therefore, the cardholder The security code should be memorized and covered with opaque tape to avoid prying eyes.

2. When swiping a card, do not leave your hand to use the credit card to check out. Be sure to swipe the card in front of the POS machine and put it back into the wallet immediately after swiping the card to prevent the card from falling into the hands of others and causing information leakage.

3. Traceless overseas shopping. Many overseas shopping websites support credit card payment. You only need to enter the relevant credit card information to complete the payment easily. So don’t save your credit card information when making a payment. Entering the information manually every time can reduce the risk of credit card fraud.

4. Keep it low-key and hidden. No matter you have a gold card, diamond card or black card, it is best not to show it on social networking sites, especially the security code. Once someone sees it, your credit card will no longer belong to you. Own. If you really want to show off your abilities, remember to delete your credit card number, name, expiration date and security code first.