Abstract: The effectiveness of the protection of big data of e­business ensures high competitiveness of entrepreneurial activity in the modern market. Over the last decade, the term "electronic business" has gained wide publicity and popularity among the population in the modern world, which in turn causes certain threats from external factors and shapes the relevance of the development of modern software and technological support for the protection of big data of electronic business as a whole. The relevance of the chosen topic is justified by the increasing importance of the electronic role of commerce in the field of business activities, as well as the growing need to protect participants of electronic commerce from fraudulent actions. In this article, the authors analyze the features of information protection systems of business structures of the digital economy. The main elements of modern technologies in the context of security levels of big data in the field of e­business are highlighted. The main problems faced by e­business in the field of protection of personal and hidden data are considered. The main views of leading scientists and researchers who were and are dealing with issues of big data protection are analyzed. The main directions faced by e­business in the modern environment are characterized, the main ways to overcome the problem of increasing the level of data protection are proposed, and the main stages of using modern software aimed at protecting unstructured e­business data are defined