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.