so you won t even have to call us. change your wifi password to something you can actually remember, instantly. add that premium channel, and watch the show everyone s talking about, tonight. and the bill you need to pay? do it in seconds. because we should fit into your life, not the other way around. go to xfinity.com/myaccount missile tests and a nuclear threat may not be the only concerns about north korea. security experts tracking the global ransomware attack that affected 150 countries say the trail of clues could lead back to the north korean regime, which has a long record of computer criminality. cnn s alexandra field followng the developments and joining us live from seoul. good morning to you, alexandra. what do we know this morning?