Comprehensive Guide to Cybersecurity Fundamentals, Second Edition

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Foundations of Cybersecurity, Second Edition: A Comprehensive Guide for Newcomers

The field of cybersecurity has undergone significant changes since the release of the first edition of “Foundations of Cybersecurity.” The term “security” now encompasses more than just data center servers, extending to cloud resources, mobile devices, the Internet of Things, and Artificial Intelligence (AI).

About the Book

Jason Andress has revised his introductory security textbook for No Starch Press in response to these developments.

Book Overview

The second edition of “Foundations of Cybersecurity” is designed for individuals new to the field, network and system administrators, and managers seeking a thorough understanding of security concepts. The book is organized into 18 chapters, grouped into four parts:

Architecture and System Security
Operations and Management
Human Factors with Professional Development

“Security is not just about keeping people out, it’s also about allowing authorized users in.”— Jason Andress, Foundations of Cybersecurity.

Chapter Highlights

The first section covers the fundamentals of security, including the CIA triad, the Parkerian Hexad, threats and risk, defense in depth, threat actors, identification, authentication, access controls, auditing, and cryptography.

A significant addition to this edition is Chapter 12, which focuses on AI security. Andress explains the unique characteristics of AI systems, distinguishing them from traditional deterministic software.

This chapter explores potential threats, such as prompt injection, excessive agency, adversarial inputs, embedded exploits, and model and data poisoning. The discussion draws parallels with the OWASP Top 10 for Large Language Model (LLM) Applications 2025, providing readers with a recognizable framework applicable to further research.

Lab Projects and Career Guidance

Each chapter concludes with a guided lab project, encouraging hands-on learning. These exercises cover a range of topics, from password entropy testing and PGP encryption to audit log review, Zenmap scanning, app permission auditing, and linking Common Weakness Enumerations (CWEs) with Common Vulnerabilities and Exposures (CVEs).

In the final chapter, Andress addresses career development, offering guidance on entering the field of cybersecurity. He outlines three possible career paths, weighing the benefits of generalist versus specialist tracks, and discusses relevant certifications, including CompTIA Security+, Certified Information Systems Security Professional (CISSP), and others.

While this edition offers a comprehensive overview of security concepts, it has limitations. Cloud security and operational technology security receive scattered references but lack a dedicated chapter. Additionally, hands-on practitioners might find the technical depth insufficient in certain areas.

For those new to the field or working in IT and looking to gain a solid understanding of security concepts, the second edition of “Foundations of Cybersecurity” provides an excellent starting point, pointing readers toward further exploration and specialization.