Attribution is a judgment by the body named. It is shown here as attributed, not as proven fact.
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MITRE ATT&CK Group page, modified 31 July 2026
Says APT28 "has been attributed to" the GRU 85th Main Special Service Center, military unit 26165, and has been active since at least 2004.[1]
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US Department of Justice 13 July 2018
Charged 12 GRU officers over the 2016 hacking of the Clinton campaign, the DCCC and the DNC. Unit 26165 is alleged to have done the spearphishing and hacking, and Unit 74455 to have helped release the stolen documents.[2]
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US Department of Justice 4 October 2018
Charged seven GRU officers, five of them assigned to Unit 26165, over hacking of anti-doping bodies and a US energy firm and the April 2018 close-access operation against the OPCW in The Hague.[3]
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UK Foreign Office and NCSC 4 October 2018
Said the GRU was responsible for a series of attacks, including the 2016 DNC hack and the 2018 attempt on the OPCW, and listed APT 28, Fancy Bear, Sofacy, Sednit, Pawnstorm and Tsar Team among the names the GRU operates under.[5, 6]
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US Treasury 19 December 2018
Designated nine GRU officers of Units 26165 and 74455 under CAATSA section 224.[4]
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EU Council 22 October 2020
Listed two persons and the 85th Main Centre for Special Services (GTsSS), also known as military unit 26165, under EU cyber sanctions. The decision cites the 2015 Bundestag attack and the 2018 OPCW attempt.[7]
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NSA, CISA, FBI and UK NCSC 1 July 2021
Joint advisory on a global brute force campaign attributed to the GRU 85th GTsSS, active from at least mid-2019.[9, 10]
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UK Government 3 May 2024
Said APT28 is part of Russia's GRU, and joined Germany, the EU and Czechia in condemning an attack on the German SPD that used Outlook flaws.[13]
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Czech Ministry of Foreign Affairs 3 May 2024
Said the way Czech bodies were attacked in 2023 through an Outlook flaw "matched the profile of the actor APT28", a Russian state-controlled actor linked to military intelligence.[14]
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ANSSI (CERT-FR) 2025
Report on APT28 targeting of French entities from 2021 to 2024. Calls the intrusion set "publicly attributed to the Russian Federation".[15]
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NSA, FBI, UK NCSC and other agencies May 2025
Joint advisory on GRU 85th GTsSS military unit 26165 targeting Western logistics and technology companies.[16]
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UK Government and NCSC 18 July 2025
Said AUTHENTIC ANTICS malware is attributed to APT 28, part of the GRU 85th Main Special Service Center, military unit 26165. Sanctioned GRU units 26165, 29155 and 74455 and 18 individuals.[17]
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UK NCSC 7 April 2026
Assessed that APT28 is "almost certainly" GRU 85th GTsSS military unit 26165, in an advisory on router DNS hijacking.[18]