Discord Sleuths Gained Unauthorized Access to Anthropic’s Mythos
highnewsLLM-Specific
securityprivacy
Source: Wired (Security)April 25, 2026
Summary
A group of Discord users gained unauthorized access to Anthropic's Mythos Preview (a restricted AI model designed to find security vulnerabilities) by examining data from a breach of Mercor (an AI training startup) and making an educated guess about the model's online location based on Anthropic's known URL patterns. They exploited this access to build simple websites rather than conduct more harmful activities, potentially avoiding detection by Anthropic.
Classification
Attack Type
Supply Chain
Attack SophisticationModerate
Impact (CIA+S)
confidentialityintegrity
Affected Vendors
Anthropic
Related Issues
Monthly digest — independent AI security research
Original source: https://www.wired.com/story/security-news-this-week-discord-sleuths-gained-unauthorized-access-to-anthropics-mythos/
First tracked: April 25, 2026 at 08:00 AM
Classified by LLM (prompt v3) · confidence: 92%