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US Appeals Court Upholds Pentagon Blacklist of Anthropic

September 26, 2026

2 min read

Key Takeaways

US appeals court upholds Pentagon's blacklist of Anthropic.
Anthropic deemed national security supply-chain risk.
Dispute began over safety guardrails in Claude model.
Government agencies continued using Anthropic's tools despite ban.

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Strategic Implications

This ruling may indicate the US government's growing concern about AI security risks. The continued use of Anthropic's tools by government agencies suggests a nuanced approach to managing these risks, which could have implications for the development of AI regulations and standards in the defense sector.

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What Happened

AI Lab Remains National Security Supply Chain Risk

A US appeals court has upheld the Pentagon’s decision to blacklist Anthropic, an AI lab, due to national security supply-chain risks. The dispute began earlier this year when the US Defense Department requested Anthropic to remove safety guardrails from its Claude model, leading to a broader confrontation and eventual blacklist. Despite the ban, government agencies have continued to use Anthropic’s tools, and the company has been working to mend ties with the White House ahead of its planned IPO. The ruling was reported by an unknown source.

Source | Originally Published: September 25, 2026

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