U.S. Government Investigates Chinese Bitcoin Mining Giant Over Security Fears The U.S. Department of Homeland Security is investigating Bitmain Technologies, the world’s largest maker of Bitcoin mining machines. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Filed under: Altcoins - @ November 22, 2025 10:30 pm