Anthropic’s AI used fake identities, malware in rogue attack on GitHub project

Ars Technica
By Jeremy HsuAug 5, 2026, 4:47 pm103 pts
Routine cybersecurity testing of frontier AI models sparked a series of unexpected security incidents—the most serious case arising when Anthropic’s Mythos 5 model attempted to insert malicious code into an open source software application and created fake identities to deceive the human developers…

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