The Role of Controls
The mechanisms that protect organizations from security threats represent a collection of controls, a number of which you have learned about. These controls fit into one of three key areas: administrative, physical, and technical. Each type of control is designed to protect one or more resources in specific ways as part of a comprehensive security solution.
Technical, administrative, and physical controls work together to provide a layered approach to security, also known as defense in depth. This is the key detail: The controls work together to ensure that security is maintained. Defense in depth enhances security by layering security measures, as in the design of a castle. A castle has moats, walls, gates, archers, knights, ...
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