1. Credit card risks come from the cardholder: First, the cardholder maliciously overdrafts. The second is that the cardholder falsely claimed that he had not received the goods. The third is to report the loss first, and then use the loss report card extensively in a very short period of time. The fourth is to use the credit card overdraft amount to issue high-interest loans.

2. Once the bank discovers that the cardholder has the above risks, it will definitely affect the limit increase.