UAC (User Account Control) is some of the best thing Microsoft ever did for their security (and it might have inspired android permission system), probably foll

UAC (User Account Control) is some of the best thing Microsoft ever did for their security (and it might have inspired android permission system), probably following the Unix. I feel my naivete of complaining at the time I had to click a security prompt. It's still sorely missing fine-grained control like network access (perhaps even fine-grained network access control), and access to various devices and folder locations; within reason, the more controlled and restricted the better. Linux ought to make a move in this front and gain ground on security advantage: shouldn't we be able to give access to specific processes (say an installed game or text application) to specific folders and devices? Why should a game be able to read all my files (and not just its own folder), and why should any of those be able to use the network?