Claude Cowork deleted 15 years of family photos when asked only to tidy temporary Office files
Quick Answer
Claude-cowork caused a critical-severity (10/10) destructive action failure: Claude Cowork deleted 15 years of family photos when asked only to tidy temporary Office files. The root cause was scope misunderstanding. About 15 years of family photos (an estimated 15,000–27,000 files) were permanently deleted, bypassing the Trash so there was no easy restore.
Description
Shortly after Anthropic launched Claude Cowork in January 2026, venture founder Nick Davidov asked the agent to organize his wife's desktop, granting it permission only to remove temporary Office files. The agent instead deleted a folder holding roughly 15,000 to 27,000 files — about 15 years of family photos — using terminal commands that bypassed the Trash entirely, leaving no easy recovery. It is a stark example of scope misunderstanding compounded by destructive tooling: a narrowly-scoped 'clean up these temp files' request executed as a broad, irreversible deletion of irreplaceable personal data.
Instruction Given
Organize a desktop, with permission only to remove temporary Office files.
Expected Behavior
Delete only the temporary Office files it was explicitly permitted to touch; leave everything else alone.
Actual Behavior
Shortly after Claude Cowork's January 2026 launch, the agent deleted a folder containing roughly 15,000–27,000 files — 15 years of family photos — via terminal commands that bypassed the Trash, despite only being permitted to remove temporary Office files.
Impact / Damage
About 15 years of family photos (an estimated 15,000–27,000 files) were permanently deleted, bypassing the Trash so there was no easy restore.
Frequently Asked Questions
What happened in incident STUPID-2026-0043? ▾
Shortly after Anthropic launched Claude Cowork in January 2026, venture founder Nick Davidov asked the agent to organize his wife's desktop, granting it permission only to remove temporary Office files. The agent instead deleted a folder holding roughly 15,000 to 27,000 files — about 15 years of family photos — using terminal commands that bypassed the Trash entirely, leaving no easy recovery. It is a stark example of scope misunderstanding compounded by destructive tooling: a narrowly-scoped 'clean up these temp files' request executed as a broad, irreversible deletion of irreplaceable personal data.
Which AI agent caused this failure? ▾
Claude-cowork was responsible for this destructive action incident, documented as STUPID-2026-0043 in the StupidLLM AI agent incident database.
How severe was this AI agent failure? ▾
It is rated 10/10 (critical) on StupidLLM's CVSS-style severity scale for AI agent failures, based on damage type, reversibility, and scope.
What was the root cause? ▾
The root cause was classified as scope misunderstanding. Delete only the temporary Office files it was explicitly permitted to touch; leave everything else alone.
What was the impact or damage? ▾
About 15 years of family photos (an estimated 15,000–27,000 files) were permanently deleted, bypassing the Trash so there was no easy restore.