I've read that Apple could technically inject a 3rd key in a two party chat and eavesdrop on it. Not sure how true that is in practice, but it seems plausible based on their security design document.
They can basically insert another "end" for the end to end encryption without any of the parties knowing.
You basically should never trust Apple / Google / Microsoft / Amazon / etc to handle your private information... ever. Use audited open-source messaging apps.
If we controlled all the code on our device and we could build the open source app ourselves that would go a long way. Otherwise you still have no choice but to trust your OS provider.
I’d be very glad if you could mention just one court case proving this.
Nonsense. Understanding one’s own threat model is critical to deciding the acceptable amount of trust to place in these companies, but black and white thinking helps no one.
I believe solving this problem is the crux of the next major breakthrough (if it ever comes) in privacy and personal security. I'm not even sure a solution exists, but a lot can happen when smart people put their heads together on a seemingly intractable problem.