Johannes Willbold is a doctoral student at the chair for systems security at the Ruhr University Bochum in Germany. In this doctoral thesis, he focuses on the security of space and satellite systems, with a special emphasis on understanding real-world security issues by studying otherwise hard-to-access space software. His first paper on the security of onboard satellite software "Space Odyssey: An Experimental Software Security Analysis of Satellites" was recently accepted to the IEEE S&P 2023 conference. In 2022, Johannes visited the Cyber-Defence Campus in Switzerland for an extended research stay on satellite security, where he investigated the security of VSAT systems. He is co-founder and co-chair of SpaceSec, the first academic workshop on space and satellite systems security, which is co-located with the top-tier security conference NDSS. He also participated in the Hack-A-Sat 2 finals, spoke at the CySat 2022 on the academic state of satellite security, and was recently invited to ESA for a talk on onboard satellite firmware security.