Physical Security addresses actions you can take to protect buildings, property, and assets against intruders. When designing a physical security program, the three levels you need to protect are your outer perimeter, your inner perimeter, and your interior. This includes protection from fire, natural disasters, burglary, theft, vandalism, and terrorism.
In securing the outer perimeter, your goal is to control who can walk or drive onto your property. Your inner perimeter consists of the doors, windows, and walls of your building(s). Protecting your inner perimeter is usually accomplished with locks, keys and alarm systems. Interior security consists of the interior of your building(s). Security cameras are an effective tool for monitoring the interior of your business as well as recording evidence of crimes for later investigation. The ultimate goal is to prevent attacks, and if they do occur to recover as quickly as humanly possible.