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LayerThreadsAnthropic Claude Mythos unauthorised access

Anthropic productised Glasswing into Claude Security on Opus 4.7 as the Mythos response reached three jurisdictions.

StatusActiveCycles4First seenApr 26, 2026Last advanceMay 2, 2026
active4 cycles
History
  1. Anthropic launched Claude Security, a full-repository vulnerability scanner built on Opus 4.7, productising the defensive-cyber posture that began with Glasswing.

  2. Claude Opus 4.7 shipped with production Glasswing safeguards deployed, the first Claude model to carry them.

  3. India's MeitY secretary disclosed direct talks with Anthropic over Mythos, extending the government response to a third jurisdiction after the US and UK.

  4. Anthropic confirmed investigation and launched Project Glasswing — a $100M restricted access program for vetted government agencies and financial institutions to use Mythos defensively while keeping it locked from general access.

  5. Unauthorised access to Claude Mythos Preview reported — group gained access within 24 hours of announcement via compromised Mercor contractor credentials and API URL enumeration. Same group may have access to other unreleased Anthropic models.

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