patrick.net

Guccifer 2.0, the “lone hacker” who took credit for providing WikiLeaks with stolen emails from the Democratic National Committee, was in fact an officer of Russia’s military intelligence directorate (GRU), The Daily Beast has learned. It’s an attribution that resulted from a fleeting but critical slip-up in GRU tradecraft.
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... on one occasion, The Daily Beast has learned, Guccifer failed to activate the VPN client before logging on. As a result, he left a real, Moscow-based Internet Protocol address in the server logs of an American social media company, according to a source familiar with the government’s Guccifer investigation.
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Working off the IP address, U.S. investigators identified Guccifer 2.0 as a particular GRU officer working out of the agency’s headquarters on Grizodubovoy Street in Moscow.
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Security firms and declassified U.S. intelligence findings previously identified the GRU as the agency running “Fancy Bear,” the ten-year-old hacking organization behind the DNC email theft, as well as breaches at NATO, Obama’s White House, a French television station, the World Anti-Doping Agency, and countless NGOs, and militaries and civilian agencies in Europe, Central Asia, and the Caucasus.
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https://www.thedailybeast.com/exclusive-lone-dnc-hacker-guccifer-20-slipped-up-and-revealed-he-was-a-russian-intelligence-officer