Johannes Lohmöller

Johannes Lohmöller

Researcher of Computer Science

RWTH Aachen University

Johannes is a researcher and Ph.D. student in computer science. He joined Klaus Wehrle’s Chair of Communication and Distributed Systems at RWTH Aachen University in November 2021. Before, he graduated with an M.Sc. and B.Sc. in Computer Science from RWTH Aachen University in 2021 and 2019, respectively. His research interests focus on privacy-preserving methods for data analysis, especially in medical research, including confidential computing, homomorphic encryption, and differential privacy.

Looking for a thesis?

I always seek motivated students doing a bachelor’s or master’s thesis at COMSYS. If you are interested in privacy-preserving methods or the security of distributed systems, we should get in touch! You can expect cutting-edge research topics, extensive supervision and regular feedback. Usually, I also invite motivated students to co-author follow-up paper projects.

Still unsure or trying to figure out a good idea? No problem! Email me two sentences on your motivation and general research interests. Also include a recent transcript of records or another reference and we might find a suitable thesis topic together.

Recent Publications

Johannes Lohmöller, Hajeong Jeon, Jael Hentschel, Klaus Wehrle, Jan Pennekamp (2026). Between Promise and Practice: Challenges and Misperceptions of Applying Privacy Enhancing Technologies in Business Contexts. Proceedings of the 59th Hawaii International Conference on System Sciences (HICSS ‘26), January 6-9, 2026, Lahaina, HI, USA.

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Jan Pennekamp, Johannes Lohmöller, Niels Pressel, Sandra Geisler, Felix M. Mottaghy, Klaus Wehrle (2025). PatDiscover: Privacy-Preserving Discoverability of Patients. Proceedings of the 2nd Workshop on Cybersecurity in Healthcare (HealthSec ‘25), December 9, 2025, Honolulu, HI, USA.

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David Heye, Karl Kindermann, Robin Decker, Johannes Lohmöller, Anastasiia Belova, Sandra Geisler, Klaus Wehrle, Jan Pennekamp (2025). Supporting Artifact Evaluation with LLMs: A Study with Published Security Research Papers. Proceedings of the 2025 IEEE International Conference on Big Data (BigData ‘25), December 8-11, 2025, Macau, China.

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Benedikt von Querfurth, Johannes Lohmöller, Jan Pennekamp, Tore Bleckwehl, Rafael Kramann, Klaus Wehrle, Sikander Hayat (2025). Transformer-Based Integrative Patient Representations from Single-Cell RNA Data. Learning Meaningful Representations of Life Workshop (LMRL ‘25), April 28, 2025, Singapore, Singapore.

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Johannes Lohmöller, Jannis Scheiber, Rafael Kramann, Klaus Wehrle, Sikander Hayat, Jan Pennekamp (2024). scE(match): Privacy-Preserving Cluster Matching of Single-Cell Data. 23rd IEEE International Conference on Trust, Security and Privacy in Computing and Communications 2024 (TrustCom 2024).

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