Security meter: A practical decision-tree model to quantify risk

Security meter, a model that provides a purely quantitative and semiquantitative alternative to frequently used qualitative models, is discussed. The model includes a description of the input and output in a probabilistic decision-tree-diagram, traditionally, risk scenarios involve possible chance based catastrophic failures with scarce modeling of maliciously designed human intervention that threaten inherent system vulnerabilities. Risk management is the total process of identifying, measuring, and minimizing the uncertain events that can affect resources.