That is actually another bit of evidence that calls into question the whole story of Russian government operatives releasing the DNC emails. The Russian cyber operatives are at least as smart as their competitors around the world.
It seems more likely WikiLeaks received the emails from a "leaker" from within the DNC.
Yep, just a bunch of dummies. The kind of guys who leave footprints all over the place, and don't conceal their activities like an ordinary 17 year old hacker working out of his parent's basement.