The Security, Functionality, and Usability Triangle

Level of Security

Level of Security in any system can be defined by the strength of three components:

• Functionality:- The set of features provided by the system.
• Usability:- The GUI components used to design the system for ease of use.
• Security:- Restrictions imposed on accessing the components of the system.

The relationship between these three components is demonstrated by using a triangle because “increase or decrease in any one of the component automatically effects the other two components.”