Perimeter security includes, but is not limited to fences, walls, fully enclosed buildings, entrance gates or doors, vehicle barriers, lighting, landscaping, surveillance systems, alarm systems, and guards. Physical security may also include site entry and exit logging as well as room or area logging possibly through a keycard access system.
Overview (Physical security)
- Criminal Intelligence Glossary (Nov. 2004).
- Cybersecurity Procurement Language for Energy Delivery Systems, at 31.