Don't allow to delete "Device Messages" chat and some of its messages

[adbenitez]

related post:

Remove "second devices" possibly added by unwanted party

Let us assume I added a second device and a hacker (via malware etc.) has stolen the backup from Delta Chat to add a third device (without the user knowing). Is there a way to shut the third device (and possibly also the second) to access to the future Delta Chat messages the user writes? I assume the already sent messages are already leaked, but I would be interest if I can avoid leaks of future messages in this scenario? Another setting (but same outcome) would be countries at the airport w…