The book "Information Security and Ensuring the Reliability of Computer Systems" by B. A. Ganja is an important work that immerses the reader in the complex and multifaceted world of information security. With the rapid development of technology and an increase in the number of cyber threats, this publication becomes a reference book for professionals, students and anyone interested in data protection and the reliability of computer systems. In. A. Ganja, an experienced information technology expert, offers readers an in-depth analysis of current information security issues. The book covers a wide range of topics, ranging from the basics of data protection to modern methods of ensuring the reliability of computer systems. The author shares not only theoretical knowledge, but also practical recommendations that will help readers better understand how to protect their systems from potential threats. One of the key topics of the book is the analysis of risks and vulnerabilities faced by organizations in the digital space. Ganja examines in detail the methods of threat assessment and ways to minimize risks, which makes his work especially valuable for IT managers and security specialists. Readers will be able to learn about modern approaches to data encryption, as well as the importance of creating a reliable backup system and recovering information. The book will be of interest not only to professional IT specialists, but also to students studying information technology, as well as those who want to expand their knowledge in the field of cybersecurity. It is suitable for both beginners and experienced professionals seeking to update their knowledge of modern threats and methods of protection. If you are looking for literature that will help you understand the complex aspects of information security, "Security of information and ensuring the reliability of computer systems" will be an excellent choice. Ganja uses an accessible and understandable language, which makes the material easy to understand. He actively illustrates his ideas with examples from real practice, which allows readers to better understand how to apply the knowledge gained in their work. The style of the author is clear and logical, which makes reading not only useful, but also fascinating. The book also raises important topics such as ethics in the field of information security and responsibility for data leakage. Ganja emphasizes that information security is not only a technical measure, but also a security culture that must be implemented in every organization. This makes work relevant to everyone who works with data, regardless of their field of activity. If you are looking for literature that will help you to understand the complex aspects of information security, then “Information security and ensuring the reliability of computer systems” is what you need. The book will become an indispensable assistant for those who want to be one step ahead of cyber threats and ensure the reliability of their computer systems. Do not miss the opportunity to immerse yourself in the world of information security with B. A. Ganja and discover new horizons in this important and relevant area.