The sender is trusting that Apple isn’t capturing the message content in the iMessages app after it gets decrypted so it can be shown to the receiver. In a clo

The sender is trusting that Apple isn’t capturing the message content in the iMessages app after it gets decrypted so it can be shown to the receiver. In a closed system the sender trusts Apple and the person they’re sending to. If you are sending to someone receiving in some other app, you have to trust the receiver, Apple, and who ever makes the thing that is being used to display the decrypted message. You don’t even know what app you’re trusting as the sender. The further you go down this rabbit hole the more ergh it all feels, but actually being able to trust the whole chain from your mind to someone else’s over the internet is quite hard.