
bbc.com
April 22, 2026
3 min read
29/100
Summary
Anthropic is investigating a claim of unauthorized access to its Claude Mythos AI tool, which is described as too powerful for public release. The investigation was prompted by a report indicating that a small group accessed the tool through a third-party vendor environment.
Key Takeaways

US summons bank bosses over cyber risks from Anthropic's latest AI model
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A leak reveals that Anthropic is testing a more capable AI model "Claude Mythos"
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Opus 4.6 uncovers 500 zero-day flaws in open-source code
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NSA is using Anthropic's Mythos despite blacklist
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Detecting and Preventing Distillation Attacks
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