AI fraud detection scores transactions and accounts in real time for signs of fraud, so suspicious ones can be blocked or reviewed before money is lost.
In plain words
Fraud detection systems use AI models to give each payment or account a risk score. Stripe's Radar, for example, screens payment attempts in real time, and its AI draws on data from across Stripe's global network. A business can then allow a payment, block it, send it for manual review, or ask for extra checks such as 3D Secure. Radar also watches for card testing and coordinated fake accounts.
A quick example
Imagine a stolen card number that is tried on an online shop with several tiny purchases. The payment system spots the unusual pattern, gives the next charge a high risk score and blocks it before a large order goes through.
Where you'll meet it
- Card payments and online checkout.
- Spotting fake or coordinated accounts.
Related
Sources
- DocsRadar, Stripe documentation · read 3 Oct 2026
- DocsHow Radar works, Stripe documentation · read 3 Oct 2026
- DocsStripe Radar, Stripe · read 3 Oct 2026
Checked by WhatIsAI against the sources above · 3 Oct 2026. Spotted an error? Report it.