Real-time fraud scoring with explainability
Rules engines miss the subtle cases and over-decline the real ones; a black-box model is a non-starter for the risk committee.
Who benefits · Fraud operations, card operations, digital banking, and the case workers who review alerts.
- Inputs
- The transaction event stream, the customer history on the core, device and session signals from the channel, counterparty and merchant features, and the bank own labelled fraud outcomes.
- What the system does
- A sub-100ms model layer scores every transaction and emits the top contributing features by weight. Deterministic rules remain in front for sanctions and hard-stop conditions. Decisions, scores, and feature attributions are logged on every event.
- Output
- An approve, hold, or step-up decision on each transaction, with a short set of reason codes a case worker can read.
- Benefit
- Fewer good customers declined, more subtle fraud caught, and a model file the risk team can take through SR 11-7 review.
- Human stays here
- The model never acts alone on anything irreversible. Low-confidence calls route to a case worker; thresholds and override authority sit with the fraud operations team.