Managing Director, ACH Network Rules & Risk Management
Nacha
Devon Marsh is Managing Director, ACH Network Rules and Risk Management at Nacha. He joined Nacha in 2022 following a 26-year career in banking. Devon has worked in operations, risk management, and payments strategy, all in support of electronic payments. He is a past chairman of the Risk Management Advisory Group as well as the Accredited Payments Risk Professional Oversight Board at Nacha.
An avid photographer, hiker, and poet, Devon holds a Bachelor of Science degree from the United States Naval Academy and an MBA degree from Brenau University.
The fastest-growing fraud threat doesn’t come from external hackers—it comes from customers exploiting their own accounts and synthetic identities created specifically to defraud banks through payment networks. First-party fraud schemes using ACH, mobile deposits, and peer-to-peer platforms are surging because they look like legitimate customer behavior until it’s too late. Check kiting rings that move funds across multiple institutions, bust-out schemes that max out credit before disappearing, and synthetic identities built from real and fabricated data that pass KYC checks—all exploit the trust embedded in payment systems. This panel examines how network-level visibility reveals fraud patterns individual banks can’t detect, what rules and risk frameworks actually prevent these schemes, and where liability falls when the fraud originates from inside your own customer base.