2024
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Перегляд 2024 за Ключові слова "004.056"
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Документ Відкритий доступ An Algorithm for Analyzing the Ethereum Network Blockchain to Detect Illegal Activities(Igor Sikorsky Kyiv Polytechnic Institute, 2024) Abdullaieva, Esmira; Galchynsky, LeonidThis work is devoted to the research of the blockchain network, in particular, aimed at detecting illegal activity in the Ethereum network using forensic methods. The paper describes the concepts and basic vulnerabilities related to the Ethereum network and the integration of graph analysis to develop an algorithm that scrutinizes Ethereum's transaction structure for illegal activities, including money laundering. In addition, the study includes an analysis of the very structure of Ethereum and the blockchain, which allows insight into the identification and analysis of various aspects of their functioning. The research results are used for the software implementation of the study and improvement of the security level of the blockchain network, including the creation of advanced software solutions for network analysis and protection of the integrity of the blockchain ecosystem. This integrated methodology aims to protect the integrity of blockchain ecosystems.Документ Відкритий доступ Probabilities estimating for attacks on supply chain for critical infrastructure facilities(Igor Sikorsky Kyiv Polytechnic Institute, 2024) Ilin, Mykola; Rybak, Oleksandr; Stopochkina, IrynaThe different types of supply chain for critical infrastructure facilities of industrial sector were analyzed. Also, the main types of attacks in supply chain were considered. The character of resource dependencies was analysed and representation of supply chain in form of hierarchical oriented graph, with division into levels, was considered. The algorithm of taking into account of attack probabilities for objects, which giveresources for functioning of some endpoint object of supply chain was developed basing on dynamic programming principles. Calculation complexity of proposed algorithm was estimated, and it confirmed its effectiveness for practical situations. For thetarget area of use the proposed approach gives better calculation complexity in compare existing solutions.