Nowadays, almost all young people have a credit card, and they have also developed the habit of spending by credit card. But if the credit card is used improperly, there will be risks. When there is a risky transaction, the bank will send you a text message or comprehensively evaluate the credit card reduction for you.

How do banks monitor users' credit cards?

Banks mainly rely on two points: one is the monitoring of online transactions, and the other is the comparative investigation of risk data.

Online transaction monitoring

Online transaction monitoring of banks means that banks use the system to monitor and operate and collect basic information such as credit card holders and liabilities. , check the transaction time, place, amount, times, etc. Then the weight is calculated through a certain risk formula. If the calculated weight is abnormal, then this credit card will be prompted by the bank. In this way, it can avoid the occurrence of fake credit card and stolen credit card, and ensure the safety of cardholders.

Risk data comparison

Comparative investigation of risk data is also a method to find the risk of credit card transaction by comparing risk data.

For example, if there is a risk example of credit card transaction before, the data of this example will be compared to see whether the merchant is normal and whether the cardholder uses the card abnormally.

Of course, the banking industry is only a financial institution, and it has no right to interfere too much with the consumption behavior of merchants and individuals, so users don't have to worry too much about their privacy.

When banks find abnormal credit card transactions through the above methods, they will generally communicate with cardholders by telephone, or take measures such as sealing and freezing the cards to ensure the safety of using the cards.