Leaving aside the supposedly technical ineptitude of the French authorities (even though I think they're quite competent and that they full know what those apps do and how they work), cases like this one make me think that, going forward, one of the best strategies for "defeating" the powers that be will consist in avoiding the use of encrypted communications via special apps and the like and trying to blend in with how the general population, i.e. the normies, communicates.
Of course that the message will still need to be encrypted in a way, but that won't happen by using Telegram or Signal or WhatsApp or by encrypting your hard-drive using dedicated software, but the new "encryption" should work in a sort of "out in the open for anyone to see way", like in the famous E. A. Poe The Purloined Letter [1] short-story, with the stolen letter that was "hidden" in plain view for everyone to see.
Again, I realise that this new strategy isn't ideal, that it will most likely make it harder to keep constant the rate of encrypted communication that is now carried out using dedicated apps, but the reality on the ground is that by using Telegram or Signal or any other dedicated app that focuses on technical encryption one just manages to paint a target on his/her back.
Of course that the message will still need to be encrypted in a way, but that won't happen by using Telegram or Signal or WhatsApp or by encrypting your hard-drive using dedicated software, but the new "encryption" should work in a sort of "out in the open for anyone to see way", like in the famous E. A. Poe The Purloined Letter [1] short-story, with the stolen letter that was "hidden" in plain view for everyone to see.
Again, I realise that this new strategy isn't ideal, that it will most likely make it harder to keep constant the rate of encrypted communication that is now carried out using dedicated apps, but the reality on the ground is that by using Telegram or Signal or any other dedicated app that focuses on technical encryption one just manages to paint a target on his/her back.
[1] https://en.wikipedia.org/wiki/The_Purloined_Letter