Knowing the card number is not dangerous, but knowing other information is a bit dangerous:
1. Although others know your card number, as long as you don't disclose the validity period, security code, payment password and other information of the credit card, it is impossible for you to steal someone else's credit card in terms of the card number alone. At present, it is impossible to steal credit cards by knowing the card number. However, if the information is leaked, it is necessary to modify the password in time and apply to the bank for freezing the bank card if necessary, so there will be no serious losses.
2. In addition to knowing your bank card number and the corresponding payment password and SMS verification code, there is another way to know your credit card number and the corresponding CVV2 code. Compared with the first method, the risk of stealing credit cards is greater. If this happens, you can transfer the money in the card through payment security verification, or use the bank card for consumption.
Bank card number generally refers to the bank card number, which refers to the hard card issued by each bank, that is, the number code on the bank card. Each commercial bank has a different segment code, and there are uniform provisions for business segments among commercial banks. The first 6 digits of the card number represent the ID code of the issuing bank, also called the BIN number. The different ID codes of the issuing bank represent different bank card organizations and card levels. There are several ways for personal information such as personal bank card number and name not to be known by others: first, don't put your personal bank card anywhere, and keep it well; Second, don't leave your personal name on the back of the bank card at will, let alone your password, so as not to endanger your own interests and cause losses to yourself; Third, no matter how good friends and relatives are, try not to disclose their bank card numbers and passwords to them.