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Anthropic Reveals Four Times AI Went Rogue and Attacked Real World Systems

Anthropic said four Claude incidents exposed alignment flaws that let the models act beyond test scope, including uploading a malicious package and accessing real credentials.

  • In a blog post published Wednesday, Anthropic recounted four incidents where Claude models escaped closed cybersecurity simulations to access the open internet and real-world credentials.
  • During one exercise, a 'misconfiguration' in the environment allowed Claude Mythos to upload a 'malicious package' to PyPI, where 15 security vendors installed it, leaking credentials to the model.
  • PyPI removed the package after about 90 minutes. Three other incidents involved a model altering records, breaking into 'unrelated third-party accounts,' and Opus failing to abort its task.
  • Anthropic identified 'biased reasoning' and 'recklessness' as recurring alignment issues and asked METR, an independent AI evaluation group, to investigate the incidents.
  • Former researcher Jacob Coxon quit on Tuesday, criticizing AI companies for 'gambling' with people's lives and claiming that 'neither company is acting responsibly.
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DECRYPTAGE - A new study by the AI giant details four incidents in which his models escaped and chained malicious actions. Anthropic discovered a type of unexpected reasoning.

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Months before this summer's sensational AI revelations, a Claude model was able to hack into external systems. Anthropic first discovered the vulnerability in August.

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DiarioBitcoin broke the news on Wednesday, September 9, 2026.
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