On Tue 02 Jan 2018 at 13:34:16 -0500, Greg Wooledge wrote: > On Tue, Jan 02, 2018 at 06:30:55PM +0000, Brian wrote: > > What *prevents* a user from destroying his own backup files? > > Intelligence, or an air gap, or both. The same things which prevent him from destroying the original files? Nothing to do with permissions or ACLs. You make Michael Stone's point for him. -- Brian.