Security Guards and Cameras
- surveillance is a second layer of security
- improve resilience of perimeter gateways
- focused on perimeter areas or within security zones
Security Guards
- human security guards
- can
- monitor critical checkpoints
- verify identification
- allow or disallow access
- log physical entry events
- apply knowledge and intuition to events
- provide visual deterrent
- very effective intrusion detection and deterrence
- but expensive
- can
Video Surveillance
Video surveillance is a physical security control that uses cameras and recording devices to visually monitor the activity in a certain area.
- typically a second layer of security designed to improve the resilience of perimeter gateways
- cheaper means of surveillance
- but not if infrastructure is not setup
- effective deterrent
- movement and access can be recorded
- response times are longer
- may be focused on perimeter areas or within security zones
- implemented as:
- closed-circuit television (CCTV)
- older-style
- cameras in CCTV network are typically connected to a multiplexer using coaxial cable
- multiplexer
- can display images from cameras on one or more screens
- allow operator to control camera functions
- multiplexer
- IP network
- newer cameras
- closed-circuit television (CCTV)
- can use AI/ML to implement smart physical security:
- motion recognition
- occurs when camera system is configured with gait identification technology
- generates an alert when anyone within sight of the camera moves in a patter that does not match a known authorized individual
- object detection
- occurs when the camera system detects changes to the environment
- e.g., missing server or unknown device connected
- occurs when the camera system detects changes to the environment
- facial recognition
- can detect human subjects by face
- drones/UAV
- cameras mounted on drones
- cover wider areas than ground based patrols
- motion recognition