This fully updated guide details the application of quantitative, statistical, and/or mathematical analyses to measure security functional trends and workload, tracking what each function is doing in terms of level of effort (LOE), costs, and productivity. It serves as a go-to reference for managing an asset protection program and related security functions through the use of metrics. It supports the security professional's position on budget matters, helping to justify the cost-effectiveness of security-related decisions to senior management and other key decision-makers.