DHS Publicly Enforces DeepSeek Ban in Federal Civilian Agencies

Key points

• DHS published a notice in the Federal Register banning DeepSeek from civilian agencies like the Treasury and State Departments.
• Agencies must remove existing DeepSeek products and cannot procure new ones or third-party services built on its models.
• The order cites risks of sensitive data transfer to China and potential malware in DeepSeek’s systems.
• China’s foreign ministry criticized the ban as an over-generalization of national security concerns.
• The ban excludes the Department of Defense, which had already restricted DeepSeek access in early 2025.

Background

This follows a series of restrictions on Chinese AI in the US, including a December 2025 congressional ban on DeepSeek in intelligence systems and earlier Commerce Department restrictions. DeepSeek gained popularity in 2025 for its low-cost, open-source models, which some US tech firms adopted despite security concerns.

How outlets are covering it

Engadget and CNBC emphasize the security risks, citing potential data transfers to China and malware vulnerabilities. BBC highlights the geopolitical tension, noting that DeepSeek’s low cost and open-source nature made it attractive to US startups. AP News focuses on China’s diplomatic response, with the foreign ministry condemning the ban as politicized. All sources agree the ban excludes the Department of Defense, which had already restricted DeepSeek in 2025.

Why it matters

The ban reflects intensifying US-China tech competition and raises questions about the balance between national security and access to cost-effective AI tools. It may influence future US-China negotiations and impact US startups relying on DeepSeek’s models.

What to watch

Agencies have 60 days to request exceptions to the ban. The issue is expected to feature in upcoming US-China talks in November. DeepSeek and the Chinese embassy have not yet responded to the ban.