EVOLUTION OF INTEGRATED INFORMATION SECURITY SYSTEMS AND THE INTEGRATION OF BLOCKCHAIN TECHNOLOGIES IN THE CYBER PROTECTION OF STATE INFORMATION SYSTEMS OF UKRAINE

Abstract

The article examines the evolution of the concept of Integrated Information Security Systems (IISS) in the context of the digital transformation of the public sector, modernization of the national cybersecurity framework, and harmonization of Ukrainian legislation with international information security standards. The study reveals the relationship between classical approaches to building IISS – based on mandatory certification of technical protection complexes – and the modern paradigm of risk-oriented security management introduced by the new Law of Ukraine No. 4336-IX “On Amendments to Certain Laws of Ukraine on the Protection of Information and Cybersecurity of State Information Resources and Critical Information Infrastructure Objects.” The research emphasizes the shift from a formal certification model to a process-oriented approach based on security profiles, risk management, continuous monitoring, and security auditing. Special attention is devoted to analyzing the potential of blockchain technologies in enhancing the resilience of state information systems against cyberattacks, insider threats, and unauthorized data modifications. The study substantiates the feasibility of using distributed ledgers to ensure the immutability, authenticity, transparency, and accountability of information processes. It is determined that blockchain can serve as an innovative component of the modern IISS architecture, complementing cryptographic protection mechanisms, access control, user activity auditing, and event monitoring. A conceptual model of blockchain integration into the traditional structure of IISS is proposed, forming a new trust ecosystem within state information resources. The combination of technological innovation with the legal requirements of Law No. 4336-IX creates a foundation for improving the effectiveness of the national cybersecurity system. The purpose of the study is to substantiate the scientific, methodological, and technological directions for the modernization of Ukraine’s Integrated Information Security Systems through the integration of blockchain technologies in protecting state information resources in accordance with current legislation and international standards ISO/IEC 27001, ISO/IEC 27701, and GDPR.