Analysis governmentcritical-infrastructure
Cadet Blizzard: GRU Unit 29155 and the Sabotage Doctrine
Cadet Blizzard — GRU Unit 29155's cyber arm — is the group behind WhisperGate, a wiper that preceded Russia's full-scale Ukraine invasion. Since the September 2024 DOJ indictment publicly named its officers, a clearer picture has emerged of a unit that combines destructive cyber operations with physical sabotage across NATO member states.