# Microsoft limits employee use of Claude Fable 5 over data retention concerns

> Mythos-based Claude Fable 5 is so powerful, Anthropic mandates data retention for safety monitoring Microsoft is worried about insiders sharing confidential information with Anthropic's model Workers told to use…

- **Source:** [TechRadar](https://www.techradar.com/pro/microsoft-limits-employee-use-of-claude-fable-5-over-data-retention-concerns?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6a2affc2c5336f431ffac3e6)
- **Published:** 2026-06-11
- **Category:** Computers & IT
- **Tags:** #microsoft #anthropic #fable #retention #claude #data #safety #concerns
- **Canonical:** http://localhost:4321/a/6a2affc2c5336f431ffac3e6

---

_GearOpen's distilled summary. The full original article is published at TechRadar (source link above); GearOpen does not republish the source's full text._