Foundations Of Information Security: A Straightforward Introduction. Jason Andress

High-level overview of the information security field. Covers key concepts like confidentiality, integrity, and availability, then dives into practical applications of these ideas in the areas of operational, physical, network, application, and operating system security.

Foundations of Information Security provides readers with fundamental knowledge of information security in both theoretical and practical aspects. Each chapter explores one main security concept, lists scenarios in which the concept is applicable, and discusses the implementation of that concept in detail, often by going over rival models or strategies. Readers will come away with a sense of what types of assets need protecting, what kinds of risks exist, and what kinds of defensive measures can be taken.