The article is devoted to the study of the impact of digital transformations on the economic security of Ukraine. The article examines the essence of the digital economy, defines the features of the functioning of the economy in the context of digitalization. Based on the indicators of the international consulting company McKinsey and the World Bank, the authors analyzed the impact of digitalization on the economy, highlighted the main advantages and disadvantages of functioning in the digital economy, systematized the problems of economic security in the digital economy and highlighted systemic, structural and industry problems, as well as businesses and individuals. The main issues of economic security include the problems of "digital inequality", the lack of their own element base, changes in the labour market, industrial espionage, manipulation of personal data and others. The authors also identified a tool for monitoring the development of a networked digital society – the Network Readiness Index. The practical contribution was the development of a mechanism to smooth the impact of digital transformation on the economic security of Ukraine.