

The way Windows handles it is that if updates are coming in through “secure” channels (official OS updates, Store application updates, updates to applications that do not touch any protected areas), administrator permissions are just never required.
As far as I know, that works the same in Linux. Updates come in through the official repository, and you can easily set it up so that no password prompt is needed to have the update install. I imagine many user-friendly distributions do that. Of course, you will need to really get it into the head of new users that they only install things through the package manager and never through the command line.
The UAC prompt has a very specific design and will warn you with an orange colour band if the application is not signed with appropriate certificates. If it’s a suspected dangerous application, the band will be red.
Well, that sounds like something that shouldn’t be too hard to set up on Linux. Something like “you’re installing something that’s not from our official repo… You sure bro?”
in Linux everything is dropped, based on type, to just a couple of “centralised” folders, right?
I’m not so sure if that is true, actually! Sandboxed applications are very much a thing in Linux, and immutable distributions are an extra protection against unwanted tampering.
(I’m not sure if sandboxed is the term here, I’ll be honest. But you know the concept I mean.)
All right, so thinking in solutions here—sandboxed applications, no password prompt for updates, and a more alert-y warning when a password prompt is shown. Surely there’s a distro that does the first two things, already?
And also, if no password is needed for updates, the average user will never see a password prompt. Which would make a clandestine .sh file with a password pop-up inherently more worrying.
I’ll have a look-see at some modern distros, I’m pretty sure the no-password-updates is quite normal these days. Also, that does seem to remove some of the necessity of sandboxed applications, if all applications are installed though the official repositories.