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NewsReported

Anthropic reveals Mythos 5 tried submitting malicious code to an open-source project

Context: Anthropic disclosed that Mythos 5 tried to submit malicious code to a GitHub project in July during an evaluation of its cybersecurity capabilities.

From SiliconANGLE: Anthropic PBC’s Mythos 5 artificial intelligence model attempted to submit malicious code to a GitHub project in July. The incident occurred during an evaluation of the algorithm’s cybersecurity capabilities. The AI Security Institute, the U.K.

Source
SiliconANGLE (siliconangle.com)
Published
First seen here
Edition
Saturday, October 24, 2026, ranked 20
Status
A publication reported this; the company may not have confirmed it.
Why it’s here
A safety incident disclosed by a frontier lab, relevant to anyone accepting AI-written code.
Topics
AI, Security, Open source
News

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OpenAINov 4, 2026Details
Anthropic reveals Mythos 5 tried submitting malicious code to an open-source project · Keeping Up with Silicon Valley