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Документ Cybersecurity challenges and solutions for critical infrastructure protection(Національний авіаційний університет, 2024) Tkachov, Andrii; Korolov, Roman; Rahimova, Irada; Aksonova, Iryna; Sevriukova, YelyzavetaCritical infrastructure can be vulnerable to attack from natural disasters or malicious actors such as hackers or terrorists. If these threats are not addressed quickly, they can lead to significant disruption in service delivery or even complete shutdowns which could have devastating consequences for those relying on them for their day-to-day activities. Therefore, it is important that governments take steps towards protecting critical infrastructure from potential threats by implementing comprehensive security measures both online and offline. Based on a comprehensive analysis of current issues, a decision has been made to ensure the cyber protection of critical infrastructure objects infrastructure. An analysis of cyber threats was carried out in relation to the dynamics of historical retrospective in sectors of critical infrastructure objects. As more and more systems become connected to the internet and vulnerable to cyber-attacks, it is important for organizations to invest in robust cybersecurity defenses to protect their systems from malicious actors. By taking these measures, organizations can help protect their systems from cyber-attacks and ensure the safety of the public. Formulates a model of threats from spills of critical infrastructure objects to cyber-attacks with a breakdown of threats by type. A triad of main actions and approaches for protecting critical infrastructure has been seen. Existing problems in implementing countermeasures and major threats posed to cyberspace actors have been identified. Key factors have been identified to break the cycle of cyber-attacks on critical infrastructure. Based on a comprehensive analysis and formulated concepts, a comprehensive approach to the protection of critical infrastructure objects is proposed in accordance with the management of global trends in the development of threats, threat models, and vulnerabilities of the protection system, a triad of actions and approaches to breaking cycles of cyber-attacks on critical infrastructure.Документ Modeling of security systems for critical infrastructure facilities(PC Technology Center, 2022) Yevseiev, Serhii; Hryshchuk, Ruslan; Molodetska, Kateryna; Nazarkevych, Mariia; Hrytsyk, Volodymyr; Milov, Oleksandr; Korol, Olha; Milevskyi, Stanislav; Korolev, Roman; Pohasii, Serhii; Tkachov, Andrii; Melenti, Yevgen; Lavrut, Oleksandr; Havrylova, Alla; Herasуmov, Serhii; Holotaistrova, Halyna; Avramenko, Dmytro; Vozniak, Roman; Voitko, Oleksandr; Yerhidzei, Kseniia; Mykus, Serhii; Pribyliev, Yurii; Akhiiezer, Olena; Shyshkin, Mykhailo; Opirskyy, Ivan; Harasymchuk, Oleh; Mykhaylova, Olha; Nakonechnyy, Yuriy; Stakhiv, Marta; Tomashevsky, BogdanThe development of Industry 4.0 technologies is based on the rapid growth of the computing capabilities of mobile wireless technologies, which has made it possible to significantly expand the range of digital services and form a conglomeration of socio-cyber-physical systems and smart technologies. The First Section discusses the issues of building security systems based on the proposed Concept of multi-contour security systems, taking into account the hybridity and synergy of modern targeted cyber-attacks, their integration with social engineering methods. This approach not only increases the level of security, but also forms an objective approach to the use of post-quantum security mechanisms based on the proposed Lotka-Volterra models. The Second Section analyzes the features of the functioning of social Internet services and establishes their role in ensuring the information security of the state. An approach is proposed to identify signs of threats in the text content of social Internet services, which will allow to quickly respond to changing situations and effectively counteract such threats. A classifier of information security profiles of users of social Internet services has been developed to assess the level of their danger as potential participants in disinformation campaigns. A method for identifying and evaluating the information and psychological impact on user communities in services is proposed. Models of conflict interaction of user groups in social Internet services are considered on the example of civil movements. To effectively counter threats to information security of the state, it is proposed to use the concept of synergistic user interaction and self-organization processes in a virtual community. Particular attention is paid to countering the manipulation of public opinion in the decision-making process by users of social Internet services. The Third Section proposes a biometric security system that works to authenticate users based on a comparison of their fingerprints and certain templates stored in a biometric database. A method for determining the contour based on the passage of a curve and the filtering function of contour lines has been developed. The stage of skeletal identification is analyzed in detail. The Ateb-Gabor method with wave thinning has been developed. The performance of skeletal algorithms such as the Zhang-Suen thinning algorithm, the Hilditch algorithm, and the Ateb-Gabor method with wave decimation is analyzed. The presented results of experiments with biometric fingerprints based on the NIST Special Database 302 database showed the effectiveness of the proposed method. The software and firmware were developed using the Arduino Nano.Документ Justification of directions for improving authentication protocols in information and communication systems(Національний авіаційний університет, 2023) Havrylova, Alla; Khokhlachova, Yuliia; Tkachov, Andrii; Voropay, Natalya; Khvostenko, VladyslavThe analysis of information about the conducted cyber-threats makes it possible to identify modern information security problems when transmitted through unprotected communication channels. When conducting such an analysis, various components of the methods of implementing cyber threats are considered, but in this paper, it is proposed to pay attention to the motivational component of the emergence of threats and the existing effective tools for countering them. Such a comprehensive approach will make it possible to predict various modes of cyberattacks that cybercriminals can use against certain systems and to prepare the necessary digital security systems for the implementation of future threats. The influence of the exponential growth of the capacities of computing devices on the growth of the possibilities of implementing attacks by cybercriminals on cryptographic algorithms was also revealed. In this regard, the work considered the possibilities of increasing the level of resistance to such interventions, which are ensured by the NIST requirements for stability and security in the conditions of the post-quantum period. To determine the level of security of data transmission over an insecure network with privacy, integrity and authentication, a comparative analysis of the capabilities of information transmission protocols was conducted. The results of the analysis are presented in the form of a scheme of security and stability of protocols and algorithms that made it to the finals of the NIST competition. To ensure the integrity and authenticity of users when establishing communication sessions with websites, it is recommended to use TLS protocols. A scheme of the process of authenticated encryption and verification ofthe authenticity of an encrypted message transmitted using a TLS connection has been developed. The process diagram of authentication encryption and decryption of information when establishing a communication session in TLS protocols has been developed. A comparative analysis of different versions of TLS protocols was carried out.Документ Perspective national communication system for cyber management of critical facilities(Peal Press Ltd., Great Britain, 2020) Tomashevsky, Bogdan; Yevseiev, S. P.; Tkachov, AndriiIn a promising confidential communication system, it is proposed to use special communication systems (networks), special dual-purpose systems, as well as systems of open public Internet systems and mobile communication systems. Secrecy of data transmission, cryptographic strength, authentication and authenticity is ensured by the use of a verbatim container, cryptoalgorithms of protection, hash functions, random switching of transmission channels and blockchain transaction technology.Документ Development of procedures for modifying the cipher GOST 28147(Національний технічний університет "Харківський політехнічний інститут", 2021) Yevseiev, S. P.; Korolyov, Roman; Tkachov, Andrii; Nimchenko, AnastasiaThe entry of mankind into the era of high technologies, the rapid growth of computer technology contributes to the expansion of the range of electronic services. To ensure the security of confidential information, personal data, cryptographic systems of traditional cryptography (symmetric cryptosystems) and public key cryptography (asymmetric cryptosystems) are used. As a rule, the former provides security services, the latter provide key distribution. However, in the conditions of totalitarian surveillance in society by the special services of developed countries, cryptographic tabs are embedded in cryptographic algorithms, which, on the one hand, provide “quick” access for special services to confidential information, and on the other hand, allow intruders to break into the cryptosystem and obtain user data. The article proposes a modification of the well-known GOST 28147-89 algorithm, which ensures the "elimination" of possible crypto-bookmarks and an increase in crypto-resistance in the post-quantum period (the emergence of a full-scale quantum computer that allows hacking modern symmetric and asymmetric cryptosystems based on Grover and Shor algorithms). It is proposed to use the procedures for modifying the block-symmetric encryption algorithm (BSEA) GOST 28147-89 (2009, 2015) in OFB mode, which will make it possible to form a pseudo-random sequence based on dynamic changes in the S-box, and provide the required level of security.