The article deals with the relevant problem of updating the system of graduate training (master's degree) in Ukraine. It analyzes the ways of Ukraine's integration into the European Higher Education Area and the legal framework of higher education in Ukraine and the UK. It also presents a comparative pedagogical analysis of the features of professional training for Masters in Cybersecurity in different areas, as well as the structural, content, organizational and pedagogical principles of master programmes on cybersecurity at the universities of Ukraine and the UK. It is found that the most significant difference is the decentralized management of educational processes at the administrative level. The analysis of the legal framework of higher education shows that it is much better developed in Ukraine than in the UK due to the centralized management of education. The article proves that a significant difference between master programmes on cybersecurity in Ukraine and the UK is their level of specialization. The programmes on the investigation of computer incidents and information technology security are most prevalent at UK universities. It is specified that the number, list and names of educational courses differ significantly, which is explained primarily by the differences in the conceptual framework of the profession itself, the social needs of Ukrainian and British society in such specialists and the ways of promoting this profession in the labour market. Some positive aspects of the organization of master training in cybersecurity in the UK are emphasized. Some promising areas in professional training of Masters in Cybersecurity in Ukraine and the UK are singled out.