Algorithmic Support for Covert Storage Channel Identification in Network Protocols for DLP Systems

This master's thesis addresses the problem of confidential data leaks through covert channels in computer networks. The problem is relevant because, according to researchers' reports, the number of data leaks increases every year. The implementation of covert channels is a technologically complex process, making the data transmitted through such channels highly valuable. To address this problem, techniques for organizing covert channels were investigated during the research, as well as techniques to prevent the operation of covert channels. As a result, a solution was developed to improve the efficiency of Data Loss Prevention (DLP) systems. This solution is an extension module for the Linux kernel that normalizes network packets, thereby preventing the operation of hidden channels. The paper contains 66 pages, 17 figures, 8 tables, 59 sources, 2 appendices.