Hackers breach some White House computers

Hackers thought to be working for the Russian government breached the unclassified White House computer networks in recent weeks, sources said, resulting in temporary disruptions to some services while cybersecurity teams worked to contain the intrusion. White House officials, speaking on the condition of anonymity to discuss an ongoing investigation, said that the intruders did not damage any of the systems and that, to date, there is no evidence the classified network was hacked.