With Fancy Bear, we have medium-level confidence it's GRU, which is Russia's military intelligence agency, and with Cozy Bear, we have low-level confidence it's FSB, the Russian federal security service.

Obviously, you have the DNC engaged in communication with lots of different parties, and anything you can use to gain intelligence about what's going on in the U.S. political system and what the candidates are thinking is of high interest to Russian intelligence.

Fancy Bear actually went after opposition research and, specifically, research related to the Trump candidacy.

Dmitri Alperovitch Quotes