Me: "Mr CIO, our network is wide open, my five year old could hack it"
Him: "Oh, so what. All the important stuff is on our miniframe"
Me: "...and that's impenetrable?"
Him: "Yep, NO ONE has ever hacked our type of miniframe"
Me: --walk away, come back 10 minutes later and hand Mr. CIO his password and the root password for the system.
Him: "Oh... well we just make *blahblahblah*. No one would ever hack us"