20.500.12556/DKUM-93124 Kibernetska varnost v operativno tehnoloških (OT) okoljih in rešitve za zagotavljanje zaščite procesnih sistemov v omrežju magistrsko delo Cyber security in operational technology (ot) environments and solutions for ensuring protection of process systems in a network Operativna tehnologija upravlja naše fizično okolje in je ključna za skoraj vse sektorje kritične infrastrukture in industrijo. Potemtakem je za OT-okolja bistveno zagotoviti zanesljivo, varno in neprekinjeno delovanje, saj bi v nasprotnem primeru lahko prišlo do hudih družbenih in ekonomskih posledic. Zaradi tega so bila procesna omrežja, ki omogočajo delovanje OT-okolij, v preteklosti povsem izolirana od interneta in poslovnih omrežij organizacij. Danes pa zaradi digitalizacije in industrije 4.0 temu več ni tako – procesna omrežja so že pogosto povezana z informacijskimi, kar prinaša nove izzive, predvsem s področja kibernetske varnosti. Luč je padla na številne pomanjkljivosti OT- sistemov, kot so zastarela oprema, pomanjkanje posodobitev in varnostnih popravkov. Organizacije morajo zato sedaj poskrbeti za izvajanje ustreznih ukrepov, ki zagotavljajo zadostno raven kibernetske varnosti procesnih sistemov v omrežju. Ključni so osnovni ukrepi, kot so segmentacija, pravilno ločevanje IT in OT ter varen oddaljen dostop. Za dodatno odpornost pa so na voljo napredne varnostne tehnologije, kot so ADS- in IPS- sistemi ter zmogljive požarne pregrade. Operational technology manages our physical environment and is essential for nearly all sectors of critical infrastructure and industry. Therefore, ensuring reliable, secure, and continuous operation of OT environments is vital, as any failure could lead to severe social and economic consequences. For this reason, the process networks that support the functioning of OT systems were historically completely isolated from the internet and organisational business networks. However, with the rise of digitalization and Industry 4.0, this is no longer the case – process networks are often already connected with IT systems, which introduces new challenges, particularly in the field of cybersecurity. This has exposed numerous weaknesses in OT systems, such as outdated equipment, a lack of updates, and missing security patches. As a result, organisations must now implement appropriate measures to ensure a sufficient level of cybersecurity in their process systems. Key basic measures include segmentation, proper separation of IT and OT, and secure remote access. For enhanced resilience, advanced security technologies are also available, such as ADS and IPS systems and robust firewalls. operativna tehnologija kibernetska varnost procesna omrežja magistrska dela operational technology (OT) information technology (IT) cyber security process networks visibility true true false A. Hren Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-06-07 20:39:01 2025-09-10 16:41:20 2025-09-11 03:36:12 0000-00-00 00:00:00 2025 0 Ljubljana 2025 Ljubljana VII f., 92 str. 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 004.056(043.2) 248474627 MAG_Hren_Amadeja_2025.pdf MAG_Hren_Amadeja_2025.pdf 1 F93B45C57F3355672C64279FD62989FB cca3224ea6da1bc12c411f8cd107c0ce6dcef83238f3c5299be28289970aa502 fadb7895-5fd9-11f0-b9b5-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=193527 Fakulteta za varnostne vede 0 0 0