The protection of official information in the EMERCOM of Russia since the beginning of 2022 is due to the constant increase in cyber attacks on government and other information systems. The task of ensuring the confidentiality, integrity and accessibility of information in the departmental digital information infrastructure is becoming increasingly urgent, not only from unauthorized access, but also from various destructive destabilizing effects of force and information leakage through technical channels. Technical channels can be used to collect the necessary data for successful computer attacks on the information infrastructure. Previously unknown threats are emerging with the use of hidden acoustic channels between isolated systems, inaudible to the human ear as a hidden channel in mobile devices. Due to the emergence of new threats associated with such leakage, it seems necessary to harmonize approaches to information protection, taking into account the generalization of approaches adopted by various federal executive authorities and state corporations. An analysis of regulatory legal acts in various departments shows increased attention to the technical protection of information, therefore, when organizing the protection of information of limited distribution in the EMERCOM of Russia, it is important to clarify internal approaches to ensuring its security.