The United States and its allies have linked a group of Russian military intelligence hackers (tracked as Cadet Blizzard and Ember Bear) to Unit 29155 of Russia’s Main Directorate of the General Staff of the Armed Forces. […]
from https://www.bleepingcomputer.com/news/security/us-and-allies-link-russian-military-hackers-behind-critical-infrastructure-attacks-to-gru-unit-29155/