The explosive growth of eCommerce has focused attention on security concerns associated with online payment transactions. Cardholders worry about the safety of online transactions while card issuers are concerned about balancing the risks and costs of payment fraud with a loss of revenue caused by transaction abandonment. The 3-D Secure protocol allows payment card issuers to reduce fraud in payment transactions by verifying cardholder identity during Card Not Present (CNP) transactions. Before a transaction is authorized, a cardholder can be challenged to enter a password, answer a question, or use some other form of authentication credential. This interruption in the transaction often causes legitimate customers to abandon the purchase resulting in loss of revenue for the issuer. The challenge is how to reduce fraud without impacting the user purchase experience.