> Linux any application also can read any user's file Surely you mean any root application? Or is my understanding of the Linux security model completely incor

> Linux any application also can read any user's file Surely you mean any root application? Or is my understanding of the Linux security model completely incorrect? > And in Chrome and Firefox, any extension can read browser history, capture key presses and so on Also no, extensions have different privileges you must accept. There are lots of problems with that security model, but it doesn't any extension can do those things