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Comment by ethbr1 | Hacker News Reader

The more powerful form is the UAC full privilege escalation dance that Win 7+(?) does, which is a surprisingly elegant UX solution.

   1. Snapshot the desktop
   2. Switch to a separate secure UI session
   3. Display the snapshot in the background, greyed out, with the UAC prompt running in the current session and topmost

It avoids any chance of a user-space program faking or interacting with a UAC window.

Clever way of dealing with the train wreck of legacy Windows user/program permissioning.

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One of the things Windows did right, IMO. I hate that elevation prompts on macOS and most linux desktops are indistinguishable from any other window.

It's not just visual either. The secure desktop is in protected memory, and no other process can access it. Only NTAUTHORITY\System can initiate showing it and interact with it any way, no other process can.

You can also configure it to require you to press CTRL+ALT+DEL on the UAC prompt to be able to interact with it and enter credentials as another safeguard against spoofing.

I'm not even sure if Wayland supports doing something like that.

My only experience with non-UAC endpoint privilege management was BeyondTrust and it seemed to try to do what UAC did but with a worse user experience. It looks like the Intune EPM offering also doesn't present as clear a delineation as UAC, which seems like a missed opportunity.

>Display the snapshot in the background, greyed out,

Is there an offset. I could have sworn things always seemed offset to the side a little.

How can I tell that dialog is not just a regular fullscreen program? Even Zoom gets to record the desktop regularly.

It sounds like yet another violation of the Line of Death principle (in context of OS, not browser).

https://textslashplain.com/2017/01/14/the-line-of-death/

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