The credit card security code is composed of a set of 3 digits. Generally, cardholders can view it next to the signature field on the back of the credit card. At the same time, cardholders can also call the customer service number of the bank to which the credit card belongs and check their security code through manual customer service.

Credit card security code is an important credential for credit card transactions. If it is accidentally leaked, the credit card may be at risk of being stolen. In order to avoid unnecessary financial losses, cardholders must protect their own safety. Code, don't let anyone know.