"The following day, Obama campaign chief David Plouffe heard from White House chief of staff Josh Bolten, to the same effect: "You have a real problem ... and you have to deal with it."
The Newsweek article alleges that the source of the intrusions were from outside of the U.S. (again, the article provides no details or supporting evidence):
"Officials at the FBI and the White House told the Obama campaign that they believed a foreign entity or organization sought to gather information on the evolution of both camps' policy positions—information that might be useful in negotiations with a future administration. The Feds assured the Obama team that it had not been hacked by its political opponents."
Hackers and Spending Sprees