Authors:

The only truly secure system is one that is powered off, cast in a block of concrete and sealed in a lead-lined room with armed guards.

"Computer Recreations: Of Worms, Viruses and Core War" by A. K. Dewdney, Scientific American, www.koth.org. March 1989.
The only truly secure system is one that is powered off, cast in a block of concrete and sealed in a lead-lined room with armed guards.