Thanks to a mistake on the part Guccifer 2.0, we now know he is Russian intel operative who is based in Moscow:
THE HILL – U.S. investigators have reportedly discovered that “Guccifer 2.0,” the hacker who claimed credit for a breach of the Democratic National Committee (DNC) during the 2016 presidential race, revealed himself as a Russian intelligence operative.
The Daily Beast reports that U.S. investigators identified the hacker as a Moscow-based Russian intelligence operative after the hacker failed to activate a virtual private networking (VPN) service meant to obscure the operative’s location before logging on.
The result was the operative’s Moscow IP address being caught in the logs of a U.S. social media company, allowing U.S. investigators to track the individual.
Special counsel Robert Mueller, who is leading the investigation into Russian election meddling, has taken over the probe into Guccifer, according to The Daily Beast, which reported that he added FBI agents to his team who previously worked to track the hacker.
U.S. intelligence agencies previously stated in January 2017 that they had “high confidence” that “Russian military intelligence (General Staff Main Intelligence Directorate or GRU) used the Guccifer 2.0 persona and DCLeaks.com to release US victim data.”
They also mention that Roger Stone reportedly had contact with Guccifer:
Guccifer was known to be in brief contact with informal Trump adviser Roger Stone, who wrote in 2016 that he believed the hacker’s claims that he was not in contact with Russia.
Of course, it sounds like this Russian intelligence officer was masking his identity and location in a similar way to the recently indicted Russians who were seeking to sew chaos in the 2016 elections. So even if Stone had contact with him, it sounds like he wouldn’t have know this guy was a Russian operative. But he was, of course, shady as hell, so there’s that.