security correspondent jim sciutto, you look at the timing it looks like an awful coincidence? they re saying it was an awful coincidence. fbi sprang into action to investigate it as it was happening very quickly. after the united and new york stock exchange glitches department of homeland security told me no scenes of malicious activity. on the hill today we heard testimony on another very real threat. and that is when we are speaking abut a about terrorism, terrorists going dark using encrypted communications, attacks, authorities have no way to intercept. at a time when the fbi director said they recently thwarted several attacks at killing americans here on the u.s. homeland. today the nation s top law enforcement official gave congress a frank, sobering warning. terrorists are going dark in
happening now. breaking news police chief fired in the aftermath of the baltimore riots and freddie gray s death. the city s top cop just been ousted. what will it mean for racial tensions and violent crimes? cyberfailures. computer meltdowns paralyze america s biggest stock exchange and major airline. their connection here. who is to blame? grilling trump. andersen cooper one-on-one with the republican candidate and ask if he is being hypocriteical on immigration? can you guarantee you don t have illegal, undocumented workers working in hotel projects. i can t guarantee it. i can t guarantee anything. the fbi warning that young girls are increasingly falling victim to predators demanding naked pictures and making terrifying threats. we want to welcome viewers in the united states and around the world. wolf blitzer is off, you are in the situation room.
you heard jim s report on. why is isis so good at this. why is this such a difficult thing for the u.s. and for its allies to break? really a good question. isis has hit us right at a point in history when encryption has taken a very sophisticated turn. encryption has been around for decade. they used it in world war ii. they used it in probably in wars for a long type. now with invention of the internet, again, encryption has been used on the internet has become more sophisticated and only in recent actual months have we wound up with encryption systems where you can follow a rabbit hole in the internet and follow the through to the points where you can actually lose your identity. that s causing really really serious problems. soap this this is new technology. safe to assume that their efforts to deal with this to confront this. of course.
reporter: ashley who was 14 years old at the time, remembers falling victim to the mind games of a sexual predator. he was manipulating my mind to believe he did have pictures. maybe i have my laptop up and i know maybe i was changing or something like that. reporter: the man behind the threats, lucas chancellor of florida, now in prison serving 105 years for an extortion school scheme. she sent pictures thinking that would make him go away. but she was wrong. what started off as seven pictures that one night turned into around 60 pictures per night. i was so scared. i didn t know where it was going to go. i didn t know how far. reporter: she s one of 350 young girls victimized in 26 states across the u.s. along with canada and the uk. federal agents raided chancellor s florida home in
weeks very serious efforts off to kill people in the united states. what can you tell us about these efforts? well probably not much more than he did. the fact is he is correct. we reviewed those. they have intelligence community starting with the fbi here in the united states is very, very ak tichltctive. we are at a danger period in history the we have seen that in recent weeks and over the last year and a half or so. where the push from these groups, these terrorist groups have have changed from this large iconic type of attack to like we experienced on 9/11 on aircraft to more the lone wolf type of attacks that are smaller. but still very devastating. good example what happened in tunisia. one person killed all those people in tunisia last week. that s going to happen here. it s happened. you think it is going to happen here? i don t think there is any