for is not a back door but a front door that when you show up with a court order or search warrant you ve gone through an entire process to prove your probable cause that maybe something dangerous happened there. aside from terrorism child exploration, kidnapping, criminal gang plot to commit murders from prison. with that in mind, how difficult is it to intercept these isis inspired attacks? in other words, maybe there was no direct order coming from overseas. you had two people radicalized and inspired by isis. how can you catch that? multiple ways.