The US Department of Homeland Security warned in July 2026 that US government use of DeepSeek may result in the transfer of sensitive data to China

From the postNotice of Order Regarding Exclusion and Removal of DeepSeek Products from Federal Civilian Executive Branch Information Technology Systems and ProcurementsAlso in US civilian agencies can’t use DeepSeek, DHS says., US banning Chinese AI DeepSeek from government agency IT systems