This textbook provides a systematic and rigorous introduction to the principles and practices of IoT security, with a strong emphasis on bridging theoretical foundations and practical applications. It is primarily designed for undergraduate students but also incorporates advanced topics and research questions that may serve as entry points for graduate-level study.The volume covers the fundamental building blocks of IoT systems, including architecture, security frameworks, cryptography, authentication, and lightweight security protocols. These core topics are complemented by in-depth chapters on industrial applications—smart homes, intelligent healthcare, and intelligent transportation—where IoT security challenges and solutions are analyzed in context. A distinctive contribution of this work is Chapter 11, which demonstrates the complete process of constructing a secure IoT system from the ground up, offering students a concrete model for their own projects.Each chapter is structured around a question-and-answer format to enhance readability and engagement. To reinforce comprehension, end-of-chapter exercises and research questions are provided, supporting both self-study and classroom use. The text thus functions not only as a learning tool for students but also as a valuable resource for instructors seeking exam and discussion materials.While many textbooks in IoT security concentrate on general architectures and cryptographic foundations, this book uniquely integrates these essentials with application-driven perspectives. By combining clarity of presentation, pedagogical design, and coverage of underrepresented industrial contexts, it positions itself as a timely and indispensable reference for students, educators, and researchers committed to advancing secure IoT systems.
