# Professor's trap catches 32 of 35 students cheating with AI

A professor embedded an invisible prompt in an assignment to detect AI-generated answers, catching 32 of 35 students submitting AI-written work. The incident underscores the growing challenge of maintaining academic integrity as AI tools become more accessible.

**Importance:** 3/5

## Sources

### Technology
- [Hacker News](https://www.techspot.com/news/113243-professor-invisible-prompt-trap-catches-32-students-cheating.html) — Mon, 27 Jul 2026 19:46:05 +0000