Proceedings of the International scientific and practical conference ―Science and Society‖ (February 26-28, 2026) / Publisher website: www.naukainfo.com. – Kharkiv, Ukraine, 2026. - 355 p.

104 UDC 004.056 Bogdar Yaroslav Oleksiiovych Yepik Maksym Romanovych Perkatyi Illya Romanovych Sitalo MaksymAndriyovych Chornenkyi Kyrylo Andriyovych cadets of the Educational and Scientific Institute No. 4 Kharkiv National University of Internal Affairs Kamianets-Podilskyi, Ukraine Scientific Advisor: Luchyk Svitlana Dmytrivna Doctor of Economic Sciences, Professor Professor of the Department of Information Systems and Technologies of ESI No. 4 Kharkiv National University of Internal Affairs CYBER RESILIENCE OF THE NATIONAL CARRIER: PROTECTION AGAINST CYBER THREATS Abstract. The authors investigate the cyber resilience of the national carrier, JSC "Ukrzaliznytsia," as a critical infrastructure object under the conditions of hybrid warfare in Ukraine. The study analyzes major cyberattacks carried out against the company's information system and highlights the significant evolution of cyber defense methods for both the system as a whole and its users. Keywords: cyber resilience, carrier, critical infrastructure, hybrid warfare, Zero Trust Architecture, APT attacks, SOAR, anti-bot systems. The modern digital ecosystem of JSC "Ukrzaliznytsia" represents a unique subject for research in the field of critical infrastructure cybersecurity, as it functions under an unprecedented intensity of hybrid influence. Within the scientific discourse