Money is the direct target. Feint attacks balances, webhooks and KYC like a motivated attacker, then hands you the fix.

Health data fails quietly, in logs and exports. Feint finds where PHI actually leaks and gives your auditor the evidence.

Scanners can’t see prompt injection. Feint sends the content a real attacker would send and shows what your model does with it.

Enterprise buyers ask for proof of isolation. Feint tries to cross every boundary in your app and reports only what worked.

Feint probes every MCP server, tool and permission the way an injected prompt would, with the exact path as proof.

CI runners, tokens and OAuth apps are the way in. Feint escapes what it can and proves how far it got.