The book "Research of information security systems and networks on the basis of UNIX OS" by Kuzmenko is a fascinating and deep immersion in the world of information security , which will be a real find for IT professionals, For students as well, Computer Science . With the rapid development of technology and an increase in the number of cyber threats, this work is an important resource for anyone who wants to understand how to protect their systems and networks from potential attacks. The author, Kuzmenko, is an experienced specialist in the field of information technology, who not only shares his knowledge, but also offers readers a unique view of the problems faced by administrators and developers. The book covers a wide range of topics, from the basics of security in UNIX systems to modern methods of protection, which makes it relevant and useful in an ever-changing landscape of cyber threats. The book focuses on key aspects of information security, such as access control, data encryption, network traffic monitoring, and malware protection. Kuzmenko not only lists existing methods, but also analyzes their effectiveness, offering readers practical recommendations on the implementation of best security practices in their work processes. This makes the book especially valuable for those who want not only to theoretically understand security issues, but also to apply the knowledge gained in practice. Who can like this book? First of all, it will be of interest to students and graduate students studying information technology, as well as specialists working in the field of cybersecurity . It is also worth reading to system administrators, software developers and anyone who wants to deepen their knowledge in the field of information protection. The book will be useful for both beginners and experienced professionals seeking to update their knowledge about modern threats and methods of protection. The topics raised in the book go beyond just learning about technology. Kuzmenko emphasizes the importance of creating a safety culture in organizations, emphasizing that technical solutions should be accompanied by appropriate policies and procedures. This makes the book not only a technical guide, but also a guide to risk management and the creation of a safe environment for working with information. Kuzmenko's style distinguishes accessibility and clarity of presentation. He skillfully combines theory with practical examples, which allows the reader to easily perceive the material. The author also shares his own experience, which gives the book special value. If you are familiar with his other works, such as “Basics of network security” or “Cyberthreats and information protection”, then you already know that Kuzmenko knows how to do complex things simple and understandable. In conclusion, the “Research of information security systems and networks based on UNIX” is not just a book, but a real find for everyone who wants to be one step ahead in the world of information technology. It offers the reader not only the theoretical knowledge, but also the practical skills necessary to ensure security in modern systems. If you are looking for a source that will help you understand security issues and protect your data, then this work will become your reliable companion in this fascinating but complex world.