Key Takeaways DHS is probing Bitmain rigs for hidden remote-access risks linked to China. Large deployments near sensitive U.S. sites triggered the investigation. Potential import violations and restrictions could hit U.S. Bitcoin miners hard. The United States is investigating Bitmain, a Chinese company that makes most of the world’s Bitcoin mining machines. According to a report by Bloomberg, the government wants to know if these machines could be used for spying or sabotaging important systems in the U.S. The probe, called “Operation Red Sunset,” is being led by the Department of Homeland Security. Officials are checking whether Bitmain machines have …