Anthropic’s Mythos rollout has missed America’s cybersecurity agency

The Verge / 4/23/2026

📰 NewsSignals & Early TrendsIndustry & Market MovesModels & Research

Key Points

  • Multiple US federal agencies are reportedly using Anthropic’s new cybersecurity model, Mythos Preview, to help identify and patch security vulnerabilities.
  • Axios reports that CISA, the central coordinator for US cybersecurity, does not have access to Mythos Preview, despite other agencies participating.
  • Other agencies such as the Commerce Department and the NSA are reportedly using the model for vulnerability-finding and security-related testing.
  • The Trump administration is reportedly negotiating broader access to Mythos for government use, suggesting ongoing coordination and policy work.

Several US federal agencies are taking up Anthropic's new cybersecurity model to find vulnerabilities, but one is reportedly not getting in on the action: the nation's central cybersecurity coordinator.

On Tuesday, Axios reported that the Cybersecurity and Infrastructure Security Agency (CISA) didn't have access to Mythos Preview, which Anthropic has touted as a powerful tool for finding and patching security vulnerabilities. Meanwhile, other agencies like Commerce Department and National Security Agency (NSA) are reportedly using the model, and President Donald Trump's administration has been negotiating broader access, Axios wrote last w …

Read the full story at The Verge.