Episode 388

Agentic AI, Liability & Fraud at Scale with Robbie MacDiarmid.

Published on: 6th January, 2026

Fraudology is presented by Sardine. Request a 1:1 product demo at sardine.ai

In this episode of Fraudology, host Karisse Hendrick sits down with Robbie MacDiarmid to explore the rise of agentic AI and its implications for fraud prevention, payments, and liability in e-commerce. They break agentic commerce into its core layers: search, merchant interaction, and payment, then explain why fraud and payments are often treated as an afterthought as new AI-driven commerce experiences roll out.

They also unpack emerging risks, such as first-party fraud, account takeover, chargebacks tied to “I don’t recognize this transaction,” and the industry’s biggest unresolved issue: who owns liability when autonomous agents act on a consumer’s behalf. This episode equips listeners with the concepts—and the right questions—to navigate the next evolution of online commerce.

Robbie MacDiarmid

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.

Connect with her on LinkedIn

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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About your host

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Karisse Hendrick