The Heatbit Maxi, a space heater that also mines bitcoin, is one such device. Residential electricity rates have corkscrewed to stratospheric heights in the US since 2020, rising more than 40 percent in the past six years as of February 2026.
The basis for this connection is both on-chain (fund flows used to stage and test this operation trace back to the Radiant attackers) and operational (personas deployed across this campaign have identifiable overlaps with known DPRK-linked activity).