In December 2020, the 29th International Conference on Problems of Complex Systems Security Control took place at Trapeznikov Institute of Control Sciences, Russian Academy of Sciences (RAS), Moscow. The conference was organized by the Ministry of Science and Higher Education of the Russian Federation, Trapeznikov Institute of Control Sciences RAS, Keldysh Institute of Applied Mathematics RAS, the RAS Scientific Council on the Theory of Controlled Processes and Automation, and the Ministry of the Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters. The conference was attended by 123 authors from 49 organizations (Russia and several foreign countries)