Computer hacking.

Newsweek is reporting that both the Obama and the McCain campaign computer systems were hacked into earlier this summer

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. (Obama technical experts later speculated that the hackers were Russian or Chinese.)