CISA now has full Mythos Preview access, people familiar say
Samuel Boivin/NurPhoto via Getty Images
ByDavid DiMolfetta,
Cybersecurity Reporter, Nextgov/FCW
June 17, 2026 05:21 PM ET
The cyberdefense agency received access around a week ago, but the White House has not yet set clear parameters for how the agency should use the model.
The Cybersecurity and Infrastructure Security Agency now has full access to Anthropic’s flagship Mythos Preview model, according to a U.S. official and a second person familiar with the matter.
The cyberdefense agency received access around a week ago, the official said. Both sources spoke on the condition of anonymity to discuss internal deliberations.
The White House Office of the National Cyber Director has not yet set clear parameters for how the agency should use the model, the official added.
The lack of parameters echoes earlier Nextgov/FCWreportingshowing federal tech leaders have privately complained that ONCD has not adequately briefed them...
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