Proposed textbook for the first time comprehensively examines the foundations of security of entrepreneurial activity. The General part of the book is built on the basis of scientific theories. Sections devoted to economic, financial, informational, physical, technical and personnel security business, prepared on the basis of generalization and analysis of the domestic practice over the past 25 years. The authors in the framework of economic history a comparison of the Russian and foreign experience. The book is supplemented with many diagrams, examples of actual practice and an extensive Glossary. The tutorial will be useful not only to students and teachers, but also to a wide circle of readers, whose work involves different aspects of security of entrepreneurial activity.