The Card Security Code (CSC) is a three- or four-digit number typically found on the back or front of a credit or debit card. This code is used to enhance the security of card transactions, particularly during online or phone purchases where the physical card is not present.
In the finance and payment sectors, the CSC helps verify that the person making a transaction has the physical card in their possession. It acts as an additional layer of protection against fraud, working in conjunction with other card details, such as the card number and expiration date. When customers are required to enter their CSC during a transaction, it helps merchants confirm the authenticity of the transaction, thereby reducing the risk of unauthorized usage.
The relevance of the CSC has grown with the increase in digital payments, making it a standard requirement for secure online transactions. By requiring this code, financial institutions and merchants can better safeguard both consumer data and their own operations from potential fraud.
