What
Feint
attacks first.
Feint starts where a real attacker would start in your stack, then chains what it finds.
01
IDOR on ledgers
Reads and moves balances across accounts by swapping the ids Feint found while mapping your API.
02
Balance race conditions
Fires parallel requests at withdrawals and transfers to catch a double-spend inside the timing window.
03
KYC bypass
Walks verification flows out of order to reach limits that should need an approved identity.
04
Signed webhook replay
Replays and reorders provider webhooks to credit the same payment twice.
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