The restrictions extend earlier bans within US defense and security agencies, amid concerns that DeepSeek could expose federal information to China.
The US Department of Homeland Security has ordered the removal of DeepSeek products from federal civilian agency IT systems.
The order, filed on Monday, also covers DeepSeek affiliates and third-party products and services developed using DeepSeek implementations while prohibiting affected agencies from making new purchases.
DHS warned that use of DeepSeek by government employees and contractors could expose sensitive information to China, potentially revealing details about US citizens and federal programs.
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