All case studiesCase study · Fraud prevention
PayGuard: Real-time fraud prevention
Built for: Banks, telcos, fintechs and payment providers.
The problem
Social engineering fraud such as vishing, OTP phishing, SIM swap and device takeover moves money out of customer accounts before anyone can react.
What we built
A transaction-time fraud decision engine that detects, scores and blocks fraud in under 100ms across payments, SIM swap, social engineering, account takeover and mule networks. One SDK, any payment rail.
Key capabilities
- Transaction Guard: real-time risk scoring on outbound payments using call state, paste detection, keystroke cadence, velocity and recipient signals
- OtpGuard: detects OTP entry during an active call and shows a full-screen scam warning
- SIM Swap Defender: freezes outbound transactions when a new device appears within 48 hours of a SIM change
- Fraud Ring Intel: Neo4j graph linking accounts to detect mule networks
- Analyst dashboard with case queue, rules engine and audit log
- Android (Kotlin) and iOS (Swift) SDKs, REST API and a sandbox
Android (Kotlin)iOS (Swift)REST APINeo4j
Status and availability
Live, with interactive demos and a developer sandbox (per payguard.africa).
Visit PayGuard