CNN The Situation Room March 20, 2013 22:22:00
Be back soon. some south koreans are blaming the north. which just last week accused the u.s. and south korea of launching persistent computer virus attacks and promised revenge. >> if this comes from north korea, it was government sponsored. >> reporter: cyber analyst james lewis said pyongyang hasn't been nearly as active at cyber attacks as russia, china and iran. >> while it could indicate with the korean if it was them, was, yeah, they're moving up the chain. they're figure out how to do things. >> reporter: u.s. military commanders say this advice could be just as destructive as bullets ...