Guides
Payment fraud prevention guides
How common payment fraud patterns work, which signals expose them, and how to test rules in shadow mode before they touch real customers.
- Account takeover prevention: protect logins and saved cards
How account takeover attacks work, the device and behaviour signals that expose them, and the steps that protect logins and saved payment methods.
- BIN attack: how generated card numbers hit your checkout
How BIN attacks generate and test card numbers from a bank identification number, how to recognise one in your payment logs and how to shut it down.
- Card testing attacks: how they work and how to stop them at checkout
How card testing and BIN attacks work, the signals that expose them at checkout, and the velocity rules that stop them without blocking real buyers.
- Chargeback protection: prevent disputes before they reach your account
Why chargebacks happen, how to prevent fraud and friendly-fraud disputes before they start, and what evidence helps you win the ones you still get.
- Device fingerprinting: how it works and how it helps stop fraud
What device fingerprinting is, which browser signals it uses, how it helps catch repeat fraud and how to use it with consent and privacy in mind.
- E-commerce fraud prevention: how online stores stop fraud at checkout
The main types of online store fraud, the signals that reveal them at checkout and a step-by-step plan to cut fraud without losing good customers.
- Fraud detection API: score every payment before you send it to your provider
Score payments with the RiskCogs fraud detection API: browser SDK, POST /v1/risk-score, response fields, outcome feedback and shadow mode.
- Fraud rules engine and risk scoring: how to build rules that do not block good customers
How a fraud rules engine and risk scoring work together: signals, velocity checks, thresholds, allow and block lists, and safe testing in shadow mode.
- iGaming fraud prevention: how operators detect bonus abuse and payment fraud
A B2B guide for iGaming operators: how to detect bonus abuse, multi-accounting, deposit fraud and chargebacks with device, payment and velocity signals.
- Payment fraud prevention: methods that work for online payments
The main payment fraud types, the prevention methods that work for card-not-present payments, and how to pick and test a fraud prevention tool.
- Transaction risk scoring: how a fraud score is built and used
How a transaction risk score is built from signals, how to set approve, review and block thresholds, and how to keep the score accurate over time.