Mary roach did a whole segment on this in her book “packing for Mars”. I can highly recommend both the book and Mary as an author in general.

Don’t worry, they won’t. (at least most of them)

I feel this applies to the current relationship between US and EU as well. Dear EU, step the fuck up!

Teleguard is closed source and the encryption protocol is not public or audited.

Here is a nice overview of the most common messenger:

https://www.messenger-matrix.de/messenger-matrix-en.html

And don’t forget the data collection scandal just recently.

Survivorship bias