freeshoppingattack

A system receives a payment authorization, checks that it appears valid, and delivers what it sells. But there's a problem: the money may never arrive....
In August 2026, a study presented at the USENIX Security international conference revealed vulnerabilities in x402, a protocol that allows software programs and AI agents to automatically pay for digital services using cryptocurrency.
And what they found is really interesting...
Imagine a page that sells financial reports for 1 $USDC each.