SQL patterns I use to catch transaction fraud | Hacker News

A Hacker News thread criticized an article claiming simple SQL rules can detect card transaction fraud.

Commenters said signals like round-dollar purchases and time-window rules are too naive and likely to produce many false positives.

The discussion underscored that real fraud detection is more complex than pattern matching on transaction data.

It also highlighted the gap between oversimplified heuristics and practical fraud-fighting expertise.