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COMSYS | RWTH Aachen UniversityThe COMSYS chair at RWTH Aachen, headed by Prof. Dr.-Ing. Klaus Wehrle, conducts research in diverse areas related to computer networks and distributed systems.COMSYS | RWTH Aachen UniversitySearch   Home  Team  Staff Overview Alumni   Research Alumni   Student Alumni  Teaching  Overview Thesis Topics   Thesis Process   PhD Process   Available Theses   Ongoing Theses   Past Theses   Past PhD Theses Permanent Services   Thesis Examiner   Oral Exams Courses   Current Courses   Upcoming Courses   Past Courses Exchange Student Advisory Service   News & Overview   Incomings Miscellaneous   Internet4Kids  Research  Vision Openings   Theses   HiWi Calls   PhD and PostDoc Positions Research @ COMSYS   Publications   Projects   Past Projects Research Groups   Cyber-Physical Systems   Network Architectures   Security and Privacy   Systems Analysis Research Overview   Future Power Grids   Industrial Internet of Things   Internet Measurements   Medical Data (Privacy)  ContactLight Dark AutomaticWelcome!Welcome to the Chair of Communication and Distributed Systems at RWTH Aachen University. The chair, headed by Prof. Dr.-Ing. Klaus Wehrle, conducts research in diverse areas related to computer networks and distributed systems:Mobile and Wireless NetworksWireless Sensor NetworksNetwork and System Reliability and SecurityMassively Distributed SystemsPerformance Evaluation and Hybrid Evaluation PlatformsCross-Layer Techniques & PlatformsPlease find here more about our …TeamTeachingResearch Latest NewsJan 31, 2026COMSYS Retreat To KleinwalsertalIn the last week of January, the COMSYS team gathered in Kleinwalsertal for its annual retreat, focusing on discussions of current research and improving teaching at the chair.Jan 22, 2026COMSYS co-authors a Nature Reviews Article on Resilient Energy GridsAn interdisciplinary research team including COMSYS researchers working on the SAFEr Grid Project has published an article in the renowned journal Nature Reviews Electrical Engineering laying its foundation. On the authors list: Mirko Stoffers, Leonardo Pompe, Arthur M. Fibich and Prof. Dr.-Ing. Klaus WehrleJan 12, 2026Two Workshop Presentations @ ACSAC 2025In early December 2025, COMSYS was represented at Annual Computer Security Applications Conference (ACSAC ‘25) in beautiful Waikiki Beach, Honolulu, Hawaii, by Jan Pennekamp, who delivered two talks at co-located workshops.Dec 12, 2025Christmas Time @ COMSYSFestive Spirit Arrives at COMSYS with New DecorationsSee all Teaching@COMSYSLecture | WS 25/26Communication Systems Engineering (CSE)Introductory courses in basic technology in data communication and operating systemsLecture | WS 25/26Datenkommunikation (DatKom)Introduction to Data Communication and Computer NetworksProseminar | WS 25/26Proseminar on Lasting Research in NetworksProseminar on enduring research topics in networks and the InternetLecture | SS 26Advanced Internet Technology (AIT)This elective lecture introduces advanced networking techniques, focusing on scalability, reliability, and performance in modern networks. Topics include Peer-to-Peer systems, cloud computing, Software Defined Networking, sensor networks, and the Internet of Things.Lecture | SS 26Mobile Internet Technology (MIT)This elective lecture explores the fundamentals of wireless communication, focusing on the unique challenges of mobility and security in wireless networks. Topics include Wi-Fi, mobile cellular networks, secure mobility protocols, and routing in mobile multi-hop networks.Seminar | SS 26Seminar on Internet TechnologyThis seminar explores advanced topics in Internet technology, including cyber-physical systems, network architectures, security, and systems analysis. Students will present their research in a talk, write a detailed paper, and participate in peer reviews and discussions.Seminar | WS 25/26Seminar on Advanced Internet TechnologyBlock seminar on recent research in advanced Internet technologySeminar | SS 26Seminar on Advanced Internet TechnologyThis seminar explores advanced topics in advanced Internet technology, including cyber-physical systems, network architectures, security, and systems analysis. Students will present their research in a talk, write a detailed paper, and participate in peer reviews and discussions.Seminar | WS 25/26Seminar on Internet TechnologyBlock seminar on recent advances in Internet technologyBachelor Lab | SS 26Practical Internet eXperience (PIX)In this bachelor lab, students will build a mini-Internet by configuring routing protocols like OSPF and BGP and implement a transport protocol based on a provided specification. The course emphasizes practical skills in networking, software development, and teamwork, with a focus on testing and performance evaluation.Proseminar | SS 26Proseminar on Networks & SecurityThis proseminar explores key topics in communication networks with a focus on Security & Privacy, covering both enduring research and emerging trends. Participants will work in pairs to write, review, and present scientific papers while attending preparatory lectures and a literature research course.Proseminar | SS 26Proseminar on Lasting Research in NetworksThis proseminar explores key topics in communication networks, covering both enduring research and emerging trends. Participants will work in pairs to write, review, and present scientific papers while attending preparatory lectures and a literature research course.Latest Publications Jan Pennekamp, Lennart Bader, Emildeon Thevaraj, Stefanie Berninger, Martin Perau, Tobias Schröer, Wolfgang Boos, Salil S. Kanhere, Klaus Wehrle. PRepChain: A Versatile Privacy-Preserving Reputation System for Dynamic Supply Chain Environments. Future Generation Computer Systems, vol. 175. February 2026.PDF Cite DOI GitHub Sebastian Schwarz, Subham Sahoo, Mirko Stoffers, Patrick Pollok, Leonardo Pompe, Arthur Marcel Fibich, Amila Kaharević, Klaus Wehrle, Antonello Monti, Frank Piller, Frede Blaabjerg. Resilient low-inertia power systems through asynchronous energy balancing. Nature Reviews Electrical Engineering (2026) (Nat Rev Electr Eng (2026)). January 2026.PDF Cite DOI Johannes Lohmöller, Hajeong Jeon, Jael Hentschel, Klaus Wehrle, Jan Pennekamp. 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), Jan 6 - Jan 9, 2026, Lahaina, HI, USA. January 2026.PDF Cite DOI Zenodo Anna Galanou, Florian Lubitz, Hajeong Jeon, Christof Fetzer, Rüdiger Kapitza. Full Trust Alchemist: Reforging Attestation for Cloud-based Confidential Workloads. Proceedings of the 26th ACM Middleware Conference (Middleware ’25), Dec 15 - Dec 19, 2025, Nashville, TN, USA. December 2025.AcceptedPDF Cite DOI Jan Pennekamp, Johannes Lohmöller, Niels Pressel, Sandra Geisler, Felix M. Mottaghy, Klaus Wehrle. PatDiscover: Privacy-Preserving Discoverability of Patients. Proceedings of the 2025 Annual Computer Security Applications Conference Workshops (ACSAC Workshops ‘25). Presented at the Workshop on Cybersecurity in Healthcare, Dec 9, 2025, Honolulu, HI, USA, co-located with the 41st Annual Computer Security Applications Conference (ACSAC '25). December 2025.PDF Cite GitHubSee all publications Meet the team →Learn about our teaching activities →Check out our research →© 2026 COMSYS - Impressum - DatenschutzCite × Copy Downloadenusen-ushttps://comsys.rwth-aachen.de

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