Most likely, Guccifer 2.0 is what he says he is, namely a Moldovan hacker who is very proud of himself for penetrating the DNC's computer network so successfully. Read his FAQ (discussed on Hacker News). He's been dribbling his stuff out on his blog and his twitter feed for a while now. Stay safe, Guccifer!
Of course, it's possible he is a Russian creation. But if a Russian TLA did the job, I think it more likely they would keep it to themselves for blackmail use if she wins. Or fake an inside job, in order to sew maximum discord within the DNC.
Agreed.
A Zero Hedge article a few days ago on FR had the transcript of an interview with Guccifer 2.0. He said he is Romanian, and for part of the interview he spoke in Romanian to show he actually was from that country. Of course I suppose the interview could have lied but Durden may have access to the audio, I have no idea.