Cozy Bear
| Formation | c. 2008 |
|---|---|
| Type | Advanced persistent threat |
| Purpose | Cyberespionage, cyberwarfare |
Region | Russia |
| Methods | Spearphishing, malware |
Official language | Russian |
Parent organization | SVR (confirmed), FSB (tentative) |
| Affiliations | Fancy Bear |
Formerly called | APT29, CozyCar, CozyDuke, Dark Halo, The Dukes, Grizzly Steppe (when combined with Fancy Bear), NOBELIUM, Office Monkeys, StellarParticle, UNC2452, YTTRIUM (possibly) |
Cozy Bear is a Russian advanced persistent threat hacker group believed to be associated with Russian foreign intelligence by United States intelligence agencies and those of allied countries. Dutch signals intelligence (AIVD) and American intelligence had been monitoring the group since 2014 and was able to link the hacker group to the Russian foreign intelligence agency (SVR) after compromising security cameras in their office. CrowdStrike and Estonian intelligence reported a tentative link to the Russian domestic/foreign intelligence agency (FSB). Various groups designate it CozyCar, CozyDuke, Dark Halo, The Dukes, Midnight Blizzard, NOBELIUM, Office Monkeys, StellarParticle, UNC2452 with a tentative connection to Russian hacker group YTTRIUM. Symantec reported that Cozy Bear had been compromising diplomatic organizations and national governments since at least 2010. Der Spiegel published documents in 2023 purporting to link Russian IT firm NTC Vulkan to Cozy Bear operations.