AI Safety & Cybersecurity
Anthropic Restricts Claude Mythos Over Zero-Day Finds
The frontier model autonomously discovered thousands of critical vulnerabilities in major operating systems.

A digital representation of complex computer code glowing on a screen, featuring a translucent butterfly emblem to represent Project Glasswing in a dark server room setting.
Photo: Kronos News
Anthropic announced the restricted release of its Claude Mythos Preview model on Monday. The AI system can autonomously identify and exploit thousands of zero-day vulnerabilities in major operating systems [1][2]. These critical security flaws were previously unknown to developers [1]. Safety concerns prompted Anthropic to limit access to a defensive consortium known as Project Glasswing [1]. This group includes major tech partners like Amazon, Google, and Microsoft [1][3]. The partners will use the tool to patch systems and improve global cybersecurity defenses [3]. Experts believe Mythos represents a major leap in autonomous reasoning and technical exploitation [2]. Anthropic stated that restricting the model is necessary to prevent potential misuse in large-scale cyberattacks [2][3]. The model remains unavailable to the general public [3].
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Drafted with LLM; human-edited
- AI assisted
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Risk assessment
The topic involves sensitive cybersecurity information regarding autonomous exploitation capabilities.
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Kronos News Desk covers ai safety & cybersecurity and editorial analysis for Kronos News.
