Sort fraud controls by security function

Sort each control by the primary NIST CSF-style function it serves in payment fraud operations. Govern and identify Protect Detect Respond and recover Fraud-loss appetite statement approved for instant payout exposure Merchant category risk assessment used before onboarding approval Velocity limit that blocks repeated card attempts from one device Rolling reserve applied to new sellers in high-dispute categories Anomaly alert for sudden increase in issuer declines and retries Chargeback trend dashboard segmented by merchant and product flow Incident bridge with authority to pause payouts and preserve evidence Ledger correction and customer remediation checklist after confirmed fraud

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