Anthropic’s most dangerous AI model just fell into the wrong hands
Summary
Anthropic's Mythos AI model, a tool designed to find security weaknesses in software, was accessed by unauthorized users through a private online forum using a contractor's credentials and basic internet research techniques. The model is capable of identifying and exploiting vulnerabilities (security flaws) in major operating systems and web browsers, which is why Anthropic warned it could be dangerous if misused.
Classification
Affected Vendors
Related Issues
Original source: https://www.theverge.com/ai-artificial-intelligence/916501/anthropic-mythos-unauthorized-users-access-security
First tracked: April 22, 2026 at 08:00 AM
Classified by LLM (prompt v3) · confidence: 85%