They can do that. The cat is out of the bag. Worst case they can just use GPG/PGP, S/MIME or a bunch of other ways. Backdooring a communication medium just mean

They can do that. The cat is out of the bag. Worst case they can just use GPG/PGP, S/MIME or a bunch of other ways. Backdooring a communication medium just means they won't use it in the first place.