. >> in october russian hackers penetrateed white house cyber defenses scooping up e-mail exchanges between president obama and other senior government officials. the white house would not comment on the report published sunday by "the new york times"." if accurate it would represent one of the most significant known electronic intrusions into the top levels of the u.s. government. "the new york times" said that no classified information was collected by the hackers and the deepest most secure servers carrying classified data including images from obama's blackberry were not breached. the report said that all signs point to a russian origin for the hackers and they're presumed to be linked to or working for the government of president vladimir putin. last week u.s. defense secretary ashton carter revealed russian hackers penetrated the pentagon's unclassified systems. >> we analyzed their network activity associated it with russia and quickly kicked them off the network in efforts to minimize their efforts of returning. >> the u.s. itself has energetically spied on other world leaders' elec