Payments fraud, end to end.

The 90-day playbook: thresholds, escalation timeline, the five most common chargeback root causes, and when to bring in help.

The combined fraud-and-dispute ratio, the 0.30% and 0.90% thresholds, exit criteria, and how VAMP differs from ECM.

The five rule categories that matter, real syntax for each, the Review-mode backtest workflow, and the two rules that always false-positive.

Enter monthly fraud, chargebacks, and settled volume — get your VAMP combined ratio, ECM ratio, current tier, and distance from the next threshold. Nothing leaves your browser.

20 operator-validated fraud patterns. Pick one, tune the parameters, copy real Radar syntax — every attribute matches Stripe's published spec.

Current VAMP, ECM/ECP/EFM, Amex CMP, Discover, and MATCH thresholds — tiers, exit criteria, effective dates, last-verified timestamp.

The full compliance landscape for subscription apps: the order of escalation, processor-internal thresholds, PayPal Seller Protection, and what to watch monthly.

Thresholds, formulas, volume floors, exit criteria — plus three Series A/B/C scenarios showing which program trips first.

Rule engine vs ML-first, payment-time vs full lifecycle, deployment, integration depth, pricing. When each is the right call.

The two dispute-interception networks, alert timing, Verifi RDR automation, and why most subscription apps need both.

Track rank, XP, and 20 badges across the generator, story mode, and drill. Suggests your next quest.

A five-chapter fraud-detective campaign. Diagnose the attack, then prescribe the rule. Boss challenge each chapter.

Flashcards for the Radar attribute vocabulary, plus a 60-second Speed Drill with combo multipliers and personal bests.