🧰 Claude Mythos

The items that name it 9

• Was I wrong about open models & cyber risks?
  articleas tools2026-10-30

  Anthropic model previewed in April 2026 as a new class of cyber weapon; the author argues an accidental open-weight release would have been an acceleration, not a step change in risk

• How Anthropic ships Claude with Claude: Separating the Brain from the Hands
  talkas affected products2026-10-27It is written here as Claude Mythos (model access gated by cyber verification and trust grants).

  model access gated by cyber verification and trust grants

• Today's PHP security release, and how we're strengthening security
  articleas tools2026-10-21It is written here as Claude Mythos (Anthropic): used in a scan of PHP earlier in 2026, done with Alpha-Omega.

  Anthropic

• The Cyber Risk Discourse is Broken
  articleas affected products2026-10-06

  Closed model previewed as a potential 'new class of cyber weapon' if leaked; author argues this fear has proven unfounded given GLM-5.3's release.

• Gemini 4 Is Here, and Google’s Flagship Tops All Other AI Models on Cybersecurity
  articleas affected products2026-09-30

  Early version helped find 271 vulnerabilities in Firefox, which Mozilla then patched

• 2026 in LLMs (so far)
  talkas tools2026-09-27

  Anthropic model described as very capable at finding security vulnerabilities/hacking; restricted to a trusted group of security researchers under 'Project Glasswing' rather than publicly released

• GPT-5.5 Vulnerability Detection Eval
  articleas tools2026-05-13

  Model evaluated by the UK's AI Security Institute for finding security vulnerabilities; used as comparison baseline for GPT-5.5

• Alice and Bob Learn Secure Coding: Chapter 2
  videoas tools2026-05-11It is written here as Claude Mythos: Anthropic security model designed to discover, chain, and exploit software vulnerabilities.
• Weekly Research Brief: PHP Vulnerability; Objections to OKX-ICE’s Stock Tokenization; Solana Alpenglow Ships
  articleas toolsIt is written here as Claude Mythos (Anthropic): used by the PHP Foundation with outside firms to scan PHP code earlier in 2026; it did not find these bugs.

  Anthropic

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