White House: hacking event not new, no comment on who responsible

The White House said on Tuesday a CNN report that Russian hackers penetrated sensitive parts of the White House computer system referred to an incident it disclosed last year, and it declined to comment on who was responsible for the breach. "This report is not referring to a new incident – it is speculating on the attribution of the activity of concern on the unclassified ... network that the White House disclosed last year," White House spokesman Mark Stroh said in a statement.