Bakırcı, Emre BerkerSafahan Ahrazoglu, EvlaAltunbas, IbrahimErdoǧan, Eylem01. Izmir Institute of Technology2025-09-252025-09-2520259798331566555https://doi.org/10.1109/SIU66497.2025.11112348https://hdl.handle.net/11147/18462Isik UniversitySatellite communication and THz communication systems are some of the methods that aim to meet the demand of increasing data rates. With an importance growing alongside increasing data amounts, data security is on its way to a position that cannot be neglected when building systems. In this study, it has been shown that secure data transmission can be made possible through the use of THz frequencies in a link between LEO satellites and a ground station. Proposed scenarios data transmission performance have been analyzed. It has been shown that selection transmission have improved both data transmission and security performances. © 2025 Elsevier B.V., All rights reserved.trinfo:eu-repo/semantics/closedAccessIntercept ProbabilityLEONon-Terrestrial NetworksOutage ProbabilitySatellite SelectionTHzCommunication SatellitesData Communication SystemsData TransferSatellite Communication SystemsSecurity Of DataTerahertz WavesData-TransmissionIntercept ProbabilityLEONon-Terrestrial NetworkOutage ProbabilityPerformanceSatellite SelectionsTerrestrial NetworksTHzTransmission PerformanceOrbitsConference Object2-s2.0-10501550175310.1109/SIU66497.2025.11112348