security-breach
1 article tagged with security-breach
March 27, 2026
model releaseAnthropic
Anthropic confirms leaked model represents major reasoning advance after security breach
A data breach at Anthropic exposed internal documents detailing an unreleased AI model the company describes as its most powerful to date. Anthropic confirmed it is already testing the model with select customers, claiming significant advances in reasoning, coding, and cybersecurity. The breach resulted from a misconfiguration in Anthropic's content management system that automatically made ~3,000 uploaded files publicly accessible.