The purpose of the article is to study the logical and sematic accuracy of the use of technical terms in the organizational, legal and organizational and administrative documents of EMERCOM of Russia for the protection of service information, streamlining individual terms in the field of information security. The formation of the conceptual apparatus in the field of information security is singled out as a general methodological problem of information security. The definition of departmental terminology and its harmonization with common approaches allows increasing the security of information. The content of the goal of protecting information of limited distribution is studied and it is proposed to clarify it in the governing document of EMERCOM of Russia. Deals with the concepts of the term information carrier, the types of carriers are reviewed. The relevance of the study is due to the fact that, in view of the internationalization of education, the terminological system of the educational sphere of the russian and english languages today needs to be harmonized. As a result of comparison with similar documents of other state bodies and analysis of the content of terms, inconsistencies in the terminology used in individual departmental documents on the organization of the protection of confidential information were revealed. In order to protect such information, discrepancies have been established between the norms of federal legislation and the departmental procedure for handling proprietary information of limited distribution.