The book "Intelligence: a textbook . (Business Security: in 4 kn. , no. 1)» by Dmitry Vladimirovich Zerkalov is a fascinating and in-depth study devoted to security issues in business and intelligence activities. In the first book of the four-volume cycle, the author offers readers a unique look at how modern companies can protect their interests in an ever-changing market and growing threats. Dmitry Zerkalov, a well-known expert in the field of security and intelligence, not only shares his knowledge, but also offers practical recommendations that can be useful for both business owners and security professionals. His writing style is clear and accessible, which makes complex concepts understandable even for those who do not have a special education in this field. The book is replete with examples from real practice, which allows the reader to better understand how to apply theoretical knowledge in practice. “Intelligence: A textbook” will be especially interesting for those who work in the field of risk management, security, as well as entrepreneurs seeking to protect their assets and reputation. The age category of readers is not limited, but the book will be especially useful for adults who already have experience in business or are striving for its development. It raises important topics such as threat analysis, methods of gathering information, as well as strategies to counter competitors and detractors. One of the key topics addressed in the book is the need to integrate intelligence techniques into business processes. Zerkalov emphasizes that in the context of globalization and digitalization, information is becoming one of the most valuable assets, and its protection is not just a matter of security, but a matter of the survival of the company. The author invites readers to consider intelligence as a proactive tool that helps not only to prevent threats, but also to identify new opportunities for growth and development. The book also touches on ethics in intelligence activities, making it particularly relevant in light of contemporary realities, when the boundaries between fair competition and unfair practices are often blurred. Zerkalov invites readers to think about the importance of maintaining a balance between efficiency and moral standards, which makes his work not only practical, but also philosophical. If you are looking for literature that will help you better understand the security mechanisms in business, then “Intelligence: textbook” will be a real find for you. It will not only enrich your knowledge, but also inspire new ideas and approaches in your professional activities. The book can be useful not only for businessmen, but also for students studying management and security, as well as for anyone interested in the topic of information security and corporate security. Dmitry Zerkalov is the author of several other works on security and intelligence, and his experience in this area makes his works especially valuable. Reading "Intelligence: A textbook", you can not only deepen your knowledge, but also get practical tools for successful business in the modern world. Do not miss the opportunity to get acquainted with this unique book, which will be an important step towards creating a safe and successful business.