Episode 367

VAMP's Hidden Costs: Non-Settled Transactions and TC40 Reports

Published on: 8th July, 2025

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In this episode of Fraudology Karisse Hendrick dives deep into the latest developments surrounding Visa's Acquirer Monitoring Program (VAMP). As a seasoned e-commerce fraud fighter, Karisse breaks down the complex calculations and hidden implications of VAMP that every merchant, payment processor, and fraud analyst needs to understand. She reveals shocking new information about how TC40 fraud reports are being used in ways that may unfairly penalize merchants for fraud outside their control.

Karisse explains how VAMP's risk threshold is calculated using both TC40 reports and chargebacks, potentially double-counting many fraud instances. She highlights how this incentivizes the use of costly fraud alerts while still leaving merchants vulnerable. Most alarmingly, Karisse shares insights from industry veteran Rick Clinch exposing how TC40 reports include fraud types like identity theft and account takeover that occur at the issuer level, yet still count against merchants in VAMP calculations. She questions the fairness of holding merchants accountable for fraud they have no visibility into or control over.


The episode provides a masterclass in the intricate details of payment fraud monitoring, arming listeners with crucial knowledge as VAMP goes into effect. Karisse's passion for merchant advocacy shines through as she calls for more equitable fraud monitoring practices. Whether you're a fraud analyst, risk manager, or e-commerce leader, this episode is essential listening to understand the changing fraud landscape. Tune in to gain insider knowledge that could save your business from unfair penalties and empower you to push for positive change in the industry.

Fraudology is hosted by Karisse Hendrick, a fraud fighter with decades of experience advising hundreds of the biggest ecommerce companies in the world on fraud, chargebacks, and other forms of abuse impacting a company's bottom line.

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She brings her experience, expertise, and extensive network of experts to this podcast weekly, on Tuesdays.

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About the Podcast

Fraudology Podcast with Karisse Hendrick
Join Fraud Fighter Karisse Hendrick twice a week for deep dive interviews and weekly fraud news.
If you work in online fraud prevention, chances are you've caught the "bug". The bug that makes you passionate about identifying & preventing cybercriminals from getting away with stealing from your company, or your client's companies. Most people who have made cyber-fraud their career have the perfect balance of analytical and social skills, a strong sense of justice and the curiosity that will drive you to go down every path of information until you "crack the case".

Just like sociology is the study of social behavior, and psychology is the study of human behavior, Fraudology is the science and study of fraud.

On the Fraudology podcast, long-time online fraud expert, Karisse Hendrick will dive into all areas of Fraudology from the perspective of a fraud-fighter. With guests ranging from former cybercriminals to fraud-fighters at Fortune 500 companies to law enforcement and others, you will no doubt be entertained, while learning a lot about fraud & other forms of abuse prevention!

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Karisse Hendrick