# Why AI's Biggest Risk Isn’t Hallucination—It’s Unauthorized Execution

> Source: <https://www.machinebrief.com/news/why-ais-biggest-risk-isnt-hallucinationits-unauthorized-exec-8hjn>
> Published: 2026-09-11 15:30:00+00:00

# Why AI's Biggest Risk Isn’t Hallucination—It’s Unauthorized Execution

By Lev Yatsemyrskyi, Forbes Councils MemberSource: 

[Forbes Innovation](https://www.forbes.com/innovation/)
Telling an 

[AI agent](/glossary/ai-agent)what not to do is different from designing a system that makes certain actions impossible.
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