The Federal Bureau of Investigation (FBI), National Security Agency (NSA), Cybersecurity and Infrastructure Security Agency (CISA), and their partners have published a joint cybersecurity warning regarding Russian military hackers targeting critical infrastructure in the U.S. and other NATO nations. These hackers are believed to be linked to the Russian General Staff Main Intelligence Directorate (GRU), specifically the 161st Specialist Training Center, or Unit 29155. Despite this affiliation, the group operates independently from other established GRU hacking units. Cybersecurity firms are tracking this group under various names, including Cadet Blizzard, Frozenvista, Ember Bear, UAC-0056, and UNC2589. Being active since 2020, this ...
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