Hacking eToro's AI Assistant: Stealing Any User's Financial Data With a Single Tweet

All issues were responsibly reported to eToro through Bugcrowd and have been acknowledged. Hi, I’m back. This time I wandered somewhere I hadn’t planned to go. I wasn’t hunting for AI bugs at all. I was poking at eToro’s trading platform, the usual stuff, IDOR on portfolio endpoints, parameter tampering, when a little chat bubble caught my eye down in the corner. Torii, eToro’s AI assistant. Ask it about your portfolio, your balances, the market, and it just answers. ...

July 13, 2026 · 7 min · 1443 words · Jesus Lujan