Fraud flags
Detection raises flags for humans. Nothing is auto-blocked and no transaction is ever refused on a flag.
Open
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Investigating
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Resolved
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Review queue
Dismissing a flag requires a reason, which is written to the audit log.
Nothing to review
No flags match that filter.
Detection rules
- VELOCITY_CHECK — more than 5 unique phone numbers enrolled from one IP inside a rolling 60-minute window.
- SELF_REFERRAL — multiple phone numbers sharing a payment-card or device fingerprint at the same store.
- UNUSUAL_VOLUME — a store’s 24-hour order count departs sharply from its trailing average.
Duplicate transaction IDs are not a flag — they are rejected outright with HTTP 409 by a UNIQUE constraint, before any ledger or attribution write occurs.