Exposed payout data via indirect IDOR chain
A production fintech platform with standard Firebase auth and public read rules. Our recon agent mapped the exfil path; the access-control agent proved cross-user read via asymmetric Firestore rules. Finding was reproduced in an incognito browser, remediated by the customer within 48 hours, and closed under a paid engagement.
The belief that led here — an indirect-IDOR pattern first surfaced from an XBOW benchmark solve months earlier — contributed to three subsequent findings on unrelated customers. Compound learning in practice.