NSA Uses Anthropic’s Mythos Preview Despite Pentagon Risks

By Patricia Miller

Apr 20, 2026

1 min read

The NSA is using Anthropic’s Mythos Preview, raising questions amid Pentagon's supply chain risk designation for the company.

The National Security Agency has opted to use Anthropic’s Mythos Preview, even in light of the Pentagon's designation of the company as a supply chain risk. Sources indicate that the NSA's use of the model, which has also seen broader adoption within the Department of Defense, raises important questions about the alignment of governmental policies supporting security and technology innovation.

In March, the Pentagon formally labeled Anthropic a supply chain risk. This designation restricts the application of their advanced technologies in military contracts. The restriction emerged from a disagreement over ethical safeguards regarding autonomous weapon systems and domestic surveillance practices.

It's important to note that the exact applications of Mythos within the NSA remain somewhat unclear. However, organizations that have access to this model reportedly use it for scanning their systems to uncover exploitable security flaws. Access to Mythos has been limited to roughly 40 organizations due to its offensive cyber capabilities, highlighting concerns over security and the potential misuse of technology.

The implications of these developments are significant, especially in the context of the ongoing court dispute between Anthropic and governmental entities. Recently, Anthropic's CEO engaged with top White House officials to discuss the role of Mythos and the company’s overall security practices. This engagement signals a potential path ahead for collaboration, even amidst the challenges faced by Anthropic as it navigates its relationship with the government.

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