Cybersecurity and Infrastructure Security Agency

Axios: CISA lacks access to Mythos despite being the nation's top cyber defense agency

Axios reported that CISA does not have access to Claude Mythos Preview, even as other government agencies including the NSA are reportedly using it. Anthropic briefed CISA on Mythos capabilities but this did not result in access; the Commerce Department's Center for AI Standards and Innovation was separately reported to be testing the model.

The country's top cyber defense agency being excluded from a model it is supposed to help protect against creates a direct accountability and preparedness gap in U.S. critical infrastructure defense.