American Express Company
Systems and methods for reducing fraud risk for a primary transaction account

Abstract:

The system protects an account through the use of tokens, thereby eliminating the need to expose the primary account identifier during a transaction. If a primary account identifier is compromised, any use of the primary account identifier to facilitate a fraudulent purchase or settlement transaction may be blocked by the system. The system is configured to receive a payment authorization request including a payment account first identifier. The payment account first identifier serves as a search condition for a query, which is executed against a database to retrieve payment account information, if the payment account information exists. The system sends a decline response in response to the payment account first identifier and a primary account identifier from the payment account information being the same, indicating that a primary account is being used.