A bit, I'll admit I haven't audited it as much as I should -- are you aware of anything in particular?

I install it through the Fedora repositories and only use the bundled extensions, so I don't worry too much about it

I am not sure what special permissions you are talking about that Albert gets? Just like any other software, it can do whatever the user can do. As far as I understand it doesn't "phone home" or anything with my data. And doesn't really delete or move files in any way.