This article presents the results of a study on the current problem of creating new multi-agent robotic complexes with a protected network-centric control system. The main task of the work is to model and create algorithms for the processes of transmitting control signals and concealing them from third-party objects. The list of developments of interest also includes ways to investigate incidents in the implementation of these processes. The proposed approach for masking control signals makes it possible to transmit control signals between robots without revealing them, as well as the fact of their transmission. The paper describes the approach to hiding these signals in MJPEG frames of the video stream received through digital cameras installed on mobile robots. The achievements are based on the use of steganographic methods of data concealment, as well as the solutions proposed by the authors to minimize the consequences of distorting factors. Calculations and experiments have shown resistance to various attacks and high performance in signal transmission in the presence of distorting factors. At the same time, due to selected solutions, absolutely correct built-in data extraction is not a prerequisite for successful and efficient operation and interaction of robots. This approach could be useful for creation of secure mechanisms of data exchange between robotic agents in group systems.