This book is an essential resource for any master's student studying cyber security. Aligned with the CyBOK, it covers the core concepts that are essential for those looking to advance in this field. I particularly liked the structure used for each chapter, starting with clear learning objectives, followed by an in-depth exploration of fundamental topics, then highlighting key points, suggested exercises and further reading. The exercises are really well-suited for incorporating into taught modules, providing practical and challenging tasks that reinforce the material covered in each chapter. Overall, this book is a valuable addition to any cyber security curriculum.