AI fraud detection is one of the most mature and high-ROI applications of machine learning in finance — running in real time at a scale no human team could match.

How AI Fraud Detection Works

• Analyzes every transaction against historical patterns in milliseconds
• Detects anomalies — unusual amounts, times, locations, or counterparties
• Learns from confirmed fraud cases to improve over time
• Flags suspicious patterns across millions of transactions simultaneously

Types of Fraud AI Detects

• Payment fraud — unauthorized card or bank transactions
• Expense fraud — duplicate or fictitious expense claims
• Vendor fraud — fictitious or duplicate vendor payments
• Payroll fraud — ghost employees, unauthorized changes

Reference:

SAS fraud management

https://en.wikipedia.org/wiki/Special:Search?search=Fraud%20Detection