A small group of researchers would begin to sound the alarm—largely in vain—that Russia was turning Ukraine into a test lab for cyberwar innovations. They cautioned that those advancements might soon be deployed against the United States, NATO, and a larger world that remained blithely unprepared for this new dimension of war. And they pointed to a single force of Kremlin-backed hackers that seemed to be launching these unprecedented weapons of mass disruption: a group known as Sandworm.
