The book "Theoretical basis of counteraction to illegal access in the field of information" is an important and relevant publication created by a team of authors, which immerses the reader in the world of information security and data protection. With the rapid development of technology and an increase in the number of cyber threats, this book becomes a handbook for information security professionals, students, as well as anyone interested in information security issues. The book examines key aspects of countering illegal access to information, including theoretical and practical approaches to data security. The authors analyze in detail the current threats faced by organizations and individuals, and offer effective strategies for their prevention. The reader will be able to learn about information security techniques such as encryption, authentication and monitoring of network traffic, as well as legal aspects related to cybersecurity. This book will be especially useful for undergraduate and graduate students studying information technology and security, as well as for professionals working in the field of IT and cybersecurity. It can attract the attention of both novice professionals and experienced experts seeking to update their knowledge and get acquainted with new trends in the field of information protection. In addition, the book may be of interest to executives of companies that want to ensure the security of their data and protect the business from cyber threats. The topics raised in the book cover a wide range of issues, from technical aspects of information security to legal and ethical issues related to cybersecurity. The authors emphasize the importance of an integrated approach to data protection, which includes both technical measures and organizational solutions. The book also addresses the issues of responsibility for cybercrime and the role of the state in ensuring security in the digital space. The style of the authors is distinguished by clarity and accessibility, which makes complex topics understandable to a wide audience. They use examples from real practice, which allows the reader to better assimilate the material and see how theoretical concepts are applied in life. This makes the book not only a tutorial, but also a fascinating read for anyone interested in modern challenges in the field of information technology. If you’re looking for books on cybersecurity, data protection, or information technology, “Theoretical Foundations for Countering Inappropriate Access in the Information Industry” will be a great addition to your library. It will help you better understand how to protect your data and avoid potential threats, as well as open new horizons in the study of information security. Do not miss the opportunity to get acquainted with this important work, which will become a reliable assistant in a world where information is a new currency, and its protection is one of the main tasks of our time.