Nowadays, almost all young people have a credit card, and they have also developed the habit of spending it. However, if the credit card is used improperly, there will be risks. When there is a risky transaction, the bank will send you a short 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, collect basic information about credit card holders, liabilities, etc., check the time, place, amount, number of transactions, etc. of card holders, and then calculate the weight through a certain risk formula. If the calculated weight is abnormal, the credit card will be prompted by the bank, and in this way, the credit card will be prevented from being swiped falsely or stolen.

comparison of risk data

comparison of risk data is also a way to find out the risk of the credit card transaction by comparing the 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 need not worry too much about their privacy.

when a bank discovers that there are abnormal transactions in a credit card through the above methods, it will generally communicate with the cardholder by telephone, or take measures such as sealing the card and freezing it to ensure the safety of using the card.