APP Webinar: Visa: Enumeration at Scale: How Fraudsters Are Testing the Payments Ecosystem

This October bonus session of the Association of Payment Professionals (APP) Monthly Education Webinar Series features Visa and takes place on 20 October 2026, starting at 11:00 Pacific time (PDT) and running for an hour on Zoom.

The topic is enumeration — the systematic, automated testing of payment credentials at scale — which is reshaping the card-not-present fraud landscape. The session explains why these attacks are growing, how fraudsters exploit payment flows, and why losses can follow quickly once card details are guessed. It also looks at layered controls, real-time analytics and ecosystem collaboration as ways to reduce exposure.

Who should attend

Acquirers, ISOs, PSPs and payment facilitators responsible for merchant risk, as well as fraud analysts and e-commerce merchants that see card-testing traffic on their checkout. The enumeration fraud webinar gives a practical view of how speed and automation change the economics of attacks, which is useful when reviewing velocity rules and authorisation monitoring.