For years, the hacking unit within Russia’s GRU military intelligence agency known as Sandworm has carried out some of the worst cyberattacks in history—blackouts, fake ransomware, data-destroying worms—from behind a carefully maintained veil of anonymity. But after half a decade of the spy agency’s botched operations, blown cover stories, and international indictments, perhaps it’s no surprise that pulling the mask off the man leading that highly destructive hacking group today reveals a familiar face.