The U.S. Navy has ordered its personnel to avoid using AI technology from China’s DeepSeek due to “potential security and ethical concerns.” The warning explicitly prohibits the use of DeepSeek’s AI for both work-related and personal tasks. The directive follows DeepSeek’s release of its R1 model, which rivals OpenAI’s technology and has surged in popularity. The announcement also comes amid concerns about DeepSeek’s rapid AI development despite U.S. chip export restrictions. The AI firm’s rise shook markets Monday, contributing to a 17% drop in Nvidia and Broadcom shares, erasing $800 billion in market value.