The article covers the functions of government regulation in the field of information security on the basis of generalizing the results of scientific development of functioning public administration system, as well as the analysis of the provisions of the Doctrine of Information Security of Ukraine. It is noted that regulation and administration as social phenomena, having a common scope, affect differently the objects of administration in order to achieve particular results, i.e. the realization of set goals and targets of administrative influence.
 The classification of functions of government regulation in the field of information security, depending on their content, is proposed. In particular, the article discloses the essence of the following functions: of organizational support, of legal support, of information support, of logistical and financial support, of state control, of rapid response to offences in the field of information security, of creating conditions for the formation of a secure information space in Ukraine, of ensuring openness and transparency of the state to the citizens, of forming a positive international image of Ukraine.
 In addition, it is proposed to classify the functions of government regulation in the field of information security by origin of respective threats into internal functions and external ones, and by rapidness of response to threats in the field of information security into permanent functions and operational ones.
 It is substantiated that at the present stage of state-building in Ukraine, government regulation in the field of ensuring information security is multifunctional activity, which is caused by a wide range of information security threats and the need for adequate state response to each of the threats to the information environment. The only basic program document defining the main functions of government regulation in the field of ensuring information security is the Doctrine of Information Security of Ukraine, approved by the Decree of the President of Ukraine. The application of the provisions of the said document allows to distinguish the proposed features. However, the status of their normative definition remains unsatisfactory and their regulation needs to be specified in view of the legislative provisions determining the status of the institutions that implement them.
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