This article discusses the issue related to the study of difficulties and barriers that arise in the process of improving the system of mechanisms to ensure corporate fraud counteraction on the example of X5 Retail Group. The author studied the existing system, which reflects a set of mechanisms aimed at combating corporate fraud in X5 Retail Group, including an analysis of specific mechanisms, depending on which aspect of protection they are aimed at. An important place in this work is given to the analysis of the use of Big Data technology in X5 Retail Group. The author gave a description of this technology, described its main elements and principle of operation, and also considered the features of its application in a group. At the same time, this paper also highlights assumptions regarding the aspects in which the use of Big Data technologies should be expanded, as well as certain vectors of further development that X5 Retail Group should pay attention to. The author identified a number of problems and difficulties that the management of X5 Retail Group has to face in the process of developing a system of mechanisms to combat corporate fraud. In addition, the author described ways to solve the main difficulties that hinder the development of the X5 Retail Group compliance system. In the final part of the work, the author gives recommendations in the field of improving the existing system of mechanisms for combating corporate fraud in X5 Retail Group, and also determines the role of Big Data technology in this process.