Fixel Smith personal blog
SQL patterns I use to catch transaction fraud
The actual queries I run when I'm hunting fraud in transaction data. Velocity, impossible distances, suspicious amounts, merchant clusters, off-hours buys, and window functions.
- Points
- 320
- HN comments
- 130
- Submissions
- 1
- Cited by
- 0 commenters
Databases & DataSecurity & Privacy2026
On Hacker News
| Submitted | Title on HN | Points | Comments |
|---|---|---|---|
| May 15, 2026 | SQL patterns I use to catch transaction fraud by redbell | 320 | 130 |
