A method and system include receiving a request to initiate a purchase transaction with a payment card product; generating a message to verify an authenticity of a cardholder of the payment card product, wherein the message includes a request for data about a previous transaction executed with the payment card product; receiving, in response to the generated message, input from the cardholder; comparing the input from the cardholder to stored data associated with the previous transaction; and one of confirming the cardholder as a true owner of the payment card product or denying the cardholder as the true owner of the payment card product based on the comparison. Numerous other aspects are provided.