The safeguard thing is the way I see it. As for the book, it's the MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing, Configuring, and Administering Microsoft Windows XP Professional, Second Edition. You wont find the whole safeguard concept thing, again, that's the way I see it. You will, however, find that thing about how even though you wouldn't normally have access to files/folders under one acct., if you are in the Backup Operators group, you can backup and restore files. If you remove the two options when restoring, you remove the security.