Think like a virus!

Not related to L.A.M.P. technologies, but a useful quote to remember if you are a net admin:

As a network administrator, you have to think like a virus.
How can I get into a network?
Which points are the most vulnerable?
Once in, what's the easiest path to destruction?

From the "Windows sources" magazine, July 1997 issue, page 158, "NT admin> Stop network attacks" by David Chernicoff