Anthropic published its September 2026 threat intelligence report covering December 2025 through August 2026 misuse of Claude Haiku, Sonnet, and Opus. The report details five bio-weapons-adjacent case studies and six conventional-weapons software cases spanning firearms, missiles, drones, and bombs, plus Russia-linked, Iranian, and Chinese operations. None of the new Fable or Mythos models appear except one distillation case.
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