Tune a velocity rule without blinding yourself
Design a velocity rule with baseline evidence, action, and monitoring.
The team needs a velocity rule for checkout abuse without blocking legitimate high-intent shoppers. NIST-style log management: collect useful records, analyze patterns, define action, and maintain the process over time. The shortcut is copying the last attack's count into a permanent block rule. That ignores baseline behavior and makes one incident the whole model. Define behavior Target failed payment attempts across multiple cards from a new device, not all checkout attempts. Precise behavior reduces false positives because it matches the fraud mechanism, not generic activity. Baseline logs Compare 30 days of confirmed fraud sessions and legitimate sessions by attempts, card…
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