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U.S. Department of Homeland Security Orders Federal Agencies to Purge DeepSeek AI Systems

October 20, 2026 at 04:38 EDT

Foundation Models
Policy & Regulation
Security

The U.S. Department of Homeland Security has mandated the immediate removal of DeepSeek, a Chinese artificial intelligence company, from all civilian federal agency IT systems. The directive, signed July 24, 2026 and published on the Federal Register on October 19, 2026, bars federal civilian agencies from procuring DeepSeek products and services going forward.

OCTOBER 2026 · SECURITY POLICY

U.S. Federal Ban on DeepSeek AI

DHS orders immediate removal of Chinese AI firm from all civilian federal agency systems, citing data security and espionage risks.

671B

Model parameters (full)

37B

Active parameters per query

All

Federal civilian agencies covered

Stated Risk Vectors

Data Access

Chinese government compelled access to models and user data under PRC law

Intelligence Risk

Potential tracking or fingerprinting of federal users

Technical Threat

Possible malware or security vulnerabilities in code

Supply Chain

Third-party products built on DeepSeek also restricted

Timeline & Scope

Signed: July 24, 2026

Published: October 19, 2026

Legal Authority: Federal Acquisition Supply Chain Security Act (2018)

Applies to: All U.S. civilian federal executive branch agencies

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