Chapter 11

Physical Security


In this chapter, barriers are both defined and discussed for students. Perimeter protection and locks/keys are explained with regard to their critical roles in ensuring security for an organization. The difference between safes and vaults is also discussed.


Chain-link fence; Continuous lighting; Master key; Mechanical locks; Safes; Vaults
Barriers can be divided into two types: natural and structural. Natural barriers are bodies of water, mountains, marshes, deserts, or other terrain that occur without man’s intervention. Structural barriers are walls, fences, grills, bars, or any other manmade structure.
Both types of barriers are used to:
1. Define property boundaries
2. Deter entry
3. Delay and impede unauthorized ...

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