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Doctoral Thesis
Author of thesis: Ing. Petr Ilgner, Ph.D.
Acad. year: 2025/2026
Supervisor: doc. Ing. Petr Číka, Ph.D.
Reviewers: doc. Ing. Martin Kyselák, Ph.D., prof. RNDr. Tomáš Pitner, Ph.D.
This doctoral thesis focuses on the cybersecurity of communication protocols used in critical infrastructure systems, with particular emphasis on the energy sector. It analyzes selected industrial communication protocols, namely IEC 60870-5-101, IEC 60870-5-104, IEC 60870-6 (TASE.2), and Modbus, in terms of their architecture, communication principles, and security limitations. The thesis includes the proposal and implementation of a testing methodology aimed at evaluating the resilience of selected components of critical infrastructure. An experimental environment was developed for the generation and collection of TASE.2 protocol data, and the performance parameters of the communication were evaluated. The work also presents the implementation of a fuzzing framework for industrial communication protocols, enabling the identification of vulnerabilities and the analysis of system behavior under non-standard conditions. Furthermore, the thesis addresses the physical security of devices used within critical infrastructure environments.
critical infrastructure, cyber security, SCADA systems, communication protocols, IEC 60870‑5, TASE.2, Modbus, fuzzing, industrial control systems, IIoT, smart grids
Date of defence
19.05.2026
Result of the defence
Defended (thesis was successfully defended)
Process of defence
Doktorand přehledně přednesl výsledky své práce a zodpověděl fundovaně na všechny otázky členů komise a oponentů.
Language of thesis
Czech
Faculty
Fakulta elektrotechniky a komunikačních technologií
Department
Department of Telecommunications
Study programme
Teleinformatics (DKC-TLI)
Composition of Committee
prof. Ing. Zdeněk Smékal, CSc. (předseda) doc. Ing. František Urban, CSc. (člen) doc. Ing. Petr Mlýnek, Ph.D. (člen) doc. Ing. Martin Kyselák, Ph.D. (člen) prof. RNDr. Tomáš Pitner, Ph.D. (člen) doc. Ing. Jiří Hošek, Ph.D. (člen)
Supervisor’s reportdoc. Ing. Petr Číka, Ph.D.
Reviewer’s reportdoc. Ing. Martin Kyselák, Ph.D.
Reviewer’s reportprof. RNDr. Tomáš Pitner, Ph.D.
Responsibility: Mgr. et Mgr. Hana Odstrčilová