This is the first book to introduce the full spectrum of security and risks and their management. Author and field expert Bruce Newsome helps readers learn how to understand, analyze, assess, control, and generally manage security and risks from the personal to the operational. They will develop the practical knowledge and skills they need, including analytical skills, basic mathematical methods for calculating risk in different ways, and more artistic skills in making judgments and decisions about which risks to control and how to control them.

Security and Capacity

Security and capacity

This chapter's two main sections describe, respectively, security and capacity, which is often conflated with security but is not the same. Readers will learn how to define, analyze, and assess both concepts.


This section concerns security. The subsections below first define security, explain how security is described at different levels, describe the main academic and official domains of security (including national security, homeland security, international security, and human security), and describe how to assess security.

Defining Security

Security is the absence of risks. Thus, security can be conceptualized as the inverse of risk and any of its sources or associated causes, including threats, hazards, exposure, or vulnerability (all of which are defined in subsequent chapters).

Security as a term is often used in ...

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