Power Play System News Today

Nuclear power play system. lets go to seoul, south korea for all the details. cnns kyung lah is joining us live. what are you learning? >> reporter: wolf, we need to underscore this is the very first time were hearing about this in this country. its coming to light just now. we have to underscore it was a successful attack. just like with sony, what investigators are saying, it was the same malware that allowed managers to get into one of the most protected government agencies in this country, t...