Authors:

It's been reported - in fact, The New York Times has reported that intelligence agencies have told the White House that they now have, quote, "high confidence" that the Russian government was behind the hack.

"Covering Hillary Clinton, A Candidate 'Forged In The Crucible' Of Conflict". "Fresh Air" with Terry Gross, www.npr.org. July 27, 2016.
It's been reported - in fact, The New York Times has reported that intelligence agencies have told the White House that they now have, quote, high confidence that the Russian government was behind the hack.