CNN CNN Newsroom-Paris Terror Attacks November 15, 2015 02:06:00
That these terrorists are using, i know the fbi director has told me he's very concerned about this ability to avoid any kind of survey. it looks like this was a coordinated event, with a lot of communication. is it your sense based on what you know they were using these encrypted apps? >> well, i don't know that. but certainly that is something making following these groups more difficult. we look to where isis is attempting to call for a terrorist attack. it does make it difficult when those become encrypted. even when they're not, we can only follow people so much. we can only go to the end...
Source: archive.org