Card velocity
velocity
Block if same PAN attempts >N payments in 1 hour across all merchants on the rail.
attempts / hour5
← Payments Rail
Fraud detection
Six rule engines + QSign-stamped device fingerprint, blended into a single risk score. Reviewer queue with one-click allow / block decisions feeds back into the ML weights.
Blocked 24h
0
Review 24h
0
Rules enabled
4/6
Blocked $ saved
$0
Rule engine
6 layers, blended risk score
BIN risk score
device
Reject if issuer BIN risk score (0–100) is above threshold. Score is recomputed weekly from chargeback signals.
max score70
Country mismatch
geo
Flag if billing country ≠ IP geolocation ≠ card-issuing country (any 2-of-3 mismatch triggers).
QSign device fingerprint
device
Require a QSign-stamped device handshake. Reject any payment without a recent device certificate (cross-platform anti-bot).
High-amount review
amount
Hold for manual review if a single payment exceeds the threshold (USD-normalized).
USD5000
Proxy / VPN / Tor
geo
Block payments routed through known commercial VPN, datacenter ASN, or Tor exit nodes.
Reviewer queue
Queue is clear.