FILE - In this Jan. 8, 2013 file photo, North Korean students surf the internet at computer terminals inside a computer lab at Kim Il Sung University in Pyongyang, North Korea during a tour by Executive Chairman of Google, Eric Schmidt. North Korea on Friday, March 15, 2013, blamed South Korea and the United States for cyberattacks that temporarily shut down websites this week at a time of elevated tensions over the North&#39;s nuclear ambitions. Experts, however, indicated it could take months to determine what happened and one analyst suggested more likely culprits: hackers in China. (AP Photo/David Guttenfelder, File)