One of the identified problems was the lack of clarity in the identified priorities and areas of cybersecurity in Ukraine, much of which did not have a clear ultimate goal and was not specific. The level of planning of measures for the implementation of the Strategy was unsatisfactory, the planned measures were not always correlated with the objectives of the Strategy. The implementation of the Strategy was complicated by the lack of a holistic vision (program) of developing the capabilities of the main actors of the national cybersecurity system, limited resources to ensure the functioning of this system, lack of proper government support for its institutional support. Indicators for the implementation of the Strategy have not been developed, which has complicated the process of evaluating its effectiveness and identifying unfinished tasks. Entities in the security and defense sector mainly took part in the implementation of the Strategy, other ministries and departments, scientific institutions, and the public were insufficiently involved. Educational and research institutions were insufficiently involved in the implementation of tasks related to the development of scientific potential and the spread of cyber literacy. The tasks of the Strategy, which are extremely important for the development of the national cybersecurity system, have not been fulfilled: the list of critical information infrastructure has not been formed, the model of public-private partnership has not been created. The development of digital literacy was carried out without a clear program, cyber learning was conducted sporadically. The new Cyber Security Strategy of Ukraine takes into account this experience and problems and determines the mechanisms for implementing the Strategy for the next five-year period.