pattern90% verified by 4 reviewers
Transaction Fraud Detection
Recognize potentially fraudulent transactions from behavioral indicators
Given / When / Then
GIVENGIVEN a financial transaction with metadata,
WHENWHEN screening for potential fraud,
THENTHEN evaluate against known fraud indicators.
Recognition Features
4 itemsfeat1•
Amount exceeds 3x customer historical average
feat2•
New device or unusual geographic location
feat3•
Multiple rapid transactions (velocity check)
feat4•
Round amounts near reporting thresholds
Mimics & False Positives
2 itemsmim1•
Legitimate large purchases (property, vehicle)
mim2•
Travel-related transactions
Recommended Actions
2 itemsact1•
3+ features: flag as likely fraud, hold transaction
act2•
1-2 features: flag as suspicious, monitor
Inputs
1 itemstransaction_dataString
Outputs
1 itemsfraud_assessmentPatternMatch
Supporting Evidence
1 itemsACFE Fraud Examiners Manual