Key Points
- Federal civilian agencies must immediately purge DeepSeek software from their information technology infrastructure under a new Homeland Security directive.
- The prohibition extends to affiliated companies and any third-party applications incorporating DeepSeek’s underlying technology.
- Government departments cannot acquire new DeepSeek-based products going forward.
- Homeland Security cited potential exposure of classified information to Beijing and identified vulnerabilities in the company’s iPhone application.
- The mandate became enforceable without delay upon its Tuesday publication.
The Department of Homeland Security has directed all federal civilian departments to eliminate software from DeepSeek, a China-based artificial intelligence firm, from their technology infrastructure.
The directive was submitted for public review to the Federal Register on Monday. Enforcement began Tuesday following official publication.
This action widens previous prohibitions on DeepSeek that were already enforced at multiple US government entities. Those prior restrictions targeted segments of the military and intelligence apparatus.
Scope of the Homeland Security Directive
The directive’s reach extends well beyond DeepSeek’s direct offerings. It encompasses companies affiliated with DeepSeek.
Applications and platforms developed using DeepSeek’s foundational technology are covered under the mandate as well. This captures software built atop DeepSeek’s AI infrastructure.
Federal civilian departments subject to this directive must eliminate these applications from their technology networks. Additionally, they face prohibitions on acquiring any new DeepSeek-related products.
The mandate targets the information systems operated by these departments. It establishes firm boundaries on both existing deployment and prospective procurement.
National Security Rationale for the Prohibition
Homeland Security stated that government personnel and contractors utilizing DeepSeek could compromise confidential information to Chinese authorities.
The department warned this intelligence could encompass data about American citizens. It might also disclose information regarding federal initiatives.
Homeland Security additionally highlighted security weaknesses discovered in DeepSeek’s application for iOS devices. This iOS version operates on Apple’s iPhone and iPad hardware.
The directive included no grace period before enforcement. The prohibitions activated immediately upon document publication.
This new mandate expands upon previous limitations imposed on DeepSeek by federal authorities. The Commerce Department had previously prohibited the firm’s technology within its own infrastructure.
Segments of America’s military, security and intelligence establishments have existing bans operational. The Homeland Security directive now implements comparable regulations across federal civilian departments.
These limitations arrive amid persistent rivalry between Washington and Beijing. Both nations are vying for dominance in artificial intelligence development.
America is not alone in implementing such measures. Australia prohibited DeepSeek applications from government infrastructure and equipment in February 2025.
The current US directive is now active throughout federal civilian agency technology systems. Following Tuesday’s publication, affected departments must remove DeepSeek applications and cannot purchase new ones.
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