The book “Methods and means of cryptographic protection of information” by Alexeyev is a fascinating and deep immersion in the world of cryptography , which will become an indispensable tool for information security professionals , As well as ,. who are just beginning their journey in this difficult , but a very important area. With the rapid growth of digital technologies and constant threats to cybersecurity, knowledge of information protection methods becomes not only useful, but vital. Alexeyev, with a wealth of experience and deep knowledge in the field of cryptography, offers readers not only theoretical foundations, but also practical recommendations. The book covers a wide range of topics, from classical encryption methods to modern algorithms such as AES and RSA. The reader will be able to learn about the principles of operation of cryptographic systems, their vulnerabilities and ways to protect against them. The author shares his observations on how cryptography has evolved over the centuries and how it has adapted to new challenges associated with the development of technologies. This book will be of interest not only to professional cryptographers and information security specialists, but also to students studying computer science, as well as anyone interested in data protection issues. If you want to understand how encryption systems work, and how you can protect your information from intruders, then “Methods and tools for cryptographic information protection” will be a real guide for you. The topics raised in the book cover not only technical aspects, but also ethical issues related to the use of cryptography. Alexeyev addresses important issues related to privacy, security and human rights in the digital world. The book makes you think about how to balance the need to protect information and the rights of citizens to freedom of speech and privacy. The author's style is distinguished by clarity and accessibility, which makes complex concepts understandable even for those who do not have deep knowledge in mathematics or programming. Alexeyev uses many examples from real life, which allows the reader to better assimilate the material and see the practical application of the theory. His previous works, such as Fundamentals of Information Security and Cryptography for Beginners, have already won recognition among readers, and this book continues a tradition of accessible and engaging presentation of complex topics. If you are looking for information about cryptography, data protection methods or just want to expand your knowledge in the field of information technology, the book “Methods and means of cryptographic protection of information” will become your reliable assistant. This is not just a textbook, but a real encyclopedia of knowledge that will help you understand the intricacies of the modern world of information security. Do not miss the opportunity to plunge into the exciting world of cryptography with Alexeyev This book is your chance to become a more informed user, protect your data, and understand how the system behind security in our digital society works.