Markus Dahlmanns, M.Sc.

Researcher

	Ahornstraße 55, building E3 52074 Aachen Germany
	9016
	+49 241 80-21425
	markus.dahlmanns@comsys.rwth-aachen.de

Short CV

Since March 2019, I’m a researcher and Ph.D. Student at Klaus Wehrle’s Chair of Communication and Distributed Systems at RWTH Aachen University. Before starting my Ph.D. studies, I graduated with an M.Sc. in Computer Science in September 2018 and received my B.Sc. in 2016. During my Bachelor’s and Master’s studies I, amongst others, got in touch with kernel-programming and anonymous communication via Tor.

Research

Currently, I’m dedicated to scrutinizing the security of industrial deployments, identifying the roots of insecure configurations, and devising mechanisms to improve the level of security. I also research mechanisms for secure communication in the ICT network of critical infrastructures.

Interests

Industrial Network Security
Internet Measurements
Security Assessment
Privacy

Education

M.Sc. in Computer Science, 2018
RWTH Aachen University
B.Sc. in Computer Science, 2016
RWTH Aachen University

Projects

I am and have been affiliated with the following projects at RWTH Aachen University:

CONNECT (finished)
Extending security schemes and functions for communication via smart meter gateways

VeN2uS (finished)
Designing a secure communication infrastructure for adaptive protection systems

Internet of Production
Analyzing security issues in the current Industrial Internet of Things

Teaching Activities

Supervision of Theses

I am supervising Bachelor’s and Master’s Theses in my research areas. Have a look at the description of projects I am currently participating, theses I previously supervised, and publications I was involved in to check whether you are also interested in these fields.

For available thesis topics look at the respective page. In case there is no open topic you can also contact me.

I have supervised 16+ Bachelor’s/Master’s theses (see below for a full list)

Courses

I am and have been involved in the following courses at RWTH Aachen University:

I have advised 8+ / 24+ topics in our Preseminar / Seminar courses
I was involved in our Research Focus Classes on
- Securing Industrial Networks (SS2021)
- Cyber Physical System Security (WS2019)
I was co-responsible for the organization and assignments of the lectures
- Advanced Internet Technology (1 of 2 teaching assistants; B course; SS2025 and SS2024)
- Operating Systems and System Software (1 of 3 teaching assistants; B course; SS2020) Responsible CS unit: Computer Vision (Prof. Dr. Bastian Leibe)
- Lecture on Data Communication and Security (1 of 3 teaching assistants; B course; SS2019)
  Responsible CS unit: IT Security (Prof. Dr.-Ing. Ulrike Meyer)
I further contributed to our
- Practical Internet eXperience (PIX) Lab (1 advised project; M course; SS2022)
- Security and Privacy Lunch (Extracurricular)

Advised Theses

A Topic in Internet Measurements

Bachelor's Thesis, RWTH Aachen University, September 2024

Advisor: Markus Dahlmanns

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Enabling TEE-based TLS for Server Applications

Bachelor's Thesis, RWTH Aachen University, November 2023

Advisor: Markus Dahlmanns

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Measuring the Prevalence of TLS SNI on the Internet

Bachelor's Thesis, RWTH Aachen University, November 2023

Advisors: Markus Dahlmanns, Constantin Sander

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Internet of Authentic Things: An Automatic Certificate Authority for the IoT

Master's Thesis, RWTH Aachen University, October 2023

Advisor: Markus Dahlmanns

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

ReCombined: Reuse and Combination of Existing Internet Measurement Data

Master's Thesis, RWTH Aachen University, August 2023

Advisors: Ike Kunze, Markus Dahlmanns

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Hunting IoT Webinterfaces on non-Standard Ports

Bachelor's Thesis, RWTH Aachen University, June 2023

Advisor: Markus Dahlmanns

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Increasing the Performance of TLS in Trusted Execution Environments

Master's Thesis, RWTH Aachen University, May 2023

Advisor: Markus Dahlmanns

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Geographically Visualizing Active Internet Measurements

Bachelor's Thesis, RWTH Aachen University, November 2022

Advisors: Markus Dahlmanns, Constantin Sander

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Industry Under Attack? Analyzing Connections to Industrial Control Systems

Bachelor's Thesis, RWTH Aachen University, September 2022

Advisor: Markus Dahlmanns

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

A Privacy-Aware Collective-Knowledge Platform for Improved Security Configurations

Master's Thesis, RWTH Aachen University, November 2021

Advisors: Markus Dahlmanns, Roman Matzutt

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

On the Occurence of Confidential Security Material in Docker Images

Bachelor's Thesis, RWTH Aachen University, October 2021

Advisors: Markus Dahlmanns, Constantin Sander

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

An Internet-Wide Study on TLS Usage in Industrial Control Systems

Master's Thesis, RWTH Aachen University, July 2021

Advisors: Markus Dahlmanns, Martin Henze (FKIE)

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Finalist at CAST Förderpreis IT-Sicherheit 2021

Analyzing Publicly Available Message Brokers

Bachelor's Thesis, RWTH Aachen University, December 2020

Advisor: Markus Dahlmanns

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Dynamic Secure Communication for Legacy Devices in Industrial Networks

Bachelor's Thesis, RWTH Aachen University, September 2020

Advisor: Markus Dahlmanns

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Vulnerability Measurements of Internet Connected Industrial Devices

Bachelor's Thesis, RWTH Aachen University, August 2020

Advisor: Markus Dahlmanns

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Remote and Privacy-Preserving Security Vulnerability Identification

Bachelor's Thesis, RWTH Aachen University, September 2019

Advisors: Markus Dahlmanns, Roman Matzutt

Examiners: Klaus Wehrle, Ulrike Meyer (IT-Sec)

Publications

Ina Berenice Fink, Lennart Ferlemann, Markus Dahlmanns, Christian Thimm, Klaus Wehrle. Emulating and Evaluating Transport Layer Protocols for Resilient Communication in Smart Grids. Proceedings of the 2025 IEEE/IFIP Network Operations and Management Symposium (NOMS ‘25), May 12 - May 16, 2025, Honolulu, HI, USA. May 2025.

Jan Pennekamp, Joseph Leisten, Paul Weiler, Markus Dahlmanns, Marcel Fey, Chrstian Brecher, Sandra Geisler, Klaus Wehrle. MapXchange: Designing a Confidentiality-Preserving Platform for Exchanging Technology Parameter Maps. Proceedings of the 40th ACM/SIGAPP Symposium on Applied Computing (SAC ‘25), Mar 31 - Apr 4, 2025, Catania, Italy. April 2025.

Markus Dahlmanns, Jan Pennekamp, Robin Decker, Klaus Wehrle. LUA-IoT: Let's Usably Authenticate the IoT. Proceedings of the 27th Annual International Conference on Information Security and Cryptology (ICISC ‘24), Nov 20 - Nov 22, 2024, Seoul, Korea. November 2024.

Ina Berenice Fink, Markus Dahlmanns, Gerrit Erichsen, Klaus Wehrle. Resilient Control Center to Substation Device Communication. Proceedings of the CIRED Chicago Workshop 2024 on Resilience of Electric Distribution Systems, Nov 7 - Nov 8, 2024, Chicago, IL, United States. November 2024.

Markus Dahlmanns, Ina Berenice Fink, Gerrit Erichsen, Guosong Lin, Thomas Hammer, Burkhard Borkenhagen, Sebastian Schneider, Christof Maahsen, Klaus Wehrle. Reliable and Secure Control Center to Station Device Communication. Proceedings of the CIRED workshop on Increasing Distribution Network Hosting Capacity 2024, Jun 19 - Jun 20, 2024, Vienna, Austria. June 2024.

Markus Dahlmanns, Klaus Wehrle. Protocol Security in the Industrial Internet of Things. Proceedings of the 2024 IEEE/IFIP Network Operations and Management Symposium (NOMS ‘24), May 6 - May 10, 2024, Seoul, Korea. May 2024.

Markus Dahlmanns, Felix Heidenreich, Johannes Lohmöller, Jan Pennekamp, Klaus Wehrle, Martin Henze. Unconsidered Installations: Discovering IoT Deployments in the IPv6 Internet. Proceedings of the 2024 IEEE/IFIP Network Operations and Management Symposium (NOMS ‘24), May 6 - May 10, 2024, Seoul, Korea. May 2024.

Ina Berenice Fink, Markus Dahlmanns, Klaus Wehrle. Poster: Resiliente Kommunikation für die Fernwirktechnik in digitalen Umspannwerken. VDE ETG/FNN-Tutorial 2024 Schutz- und Leittechnik, Mar 5 - Mar 6, 2024, Leipzig, Germany. March 2024.

Markus Dahlmanns, Andreas Wark, Carl-Heinz Genzel, Klaus Wehrle. Poster: Trusted Execution Environment-basierte Sicherheit für digitale Umspannwerke. VDE ETG/FNN-Tutorial 2024 Schutz- und Leittechnik, Mar 5 - Mar 6, 2024, Leipzig, Germany. March 2024.

Markus Dahlmanns, Roman Matzutt, Chris Dax, Klaus Wehrle. Collectively Enhancing IoT Security: A Privacy-Aware Crowd-Sourcing Approach. Proceedings of the 16th International Symposium on Foundations and Practice of Security (FPS ‘23), vol. 14551, Dec 11 - Dec 13, 2023, Bordeaux, France. January 2024.

Jan Pennekamp, Markus Dahlmanns, Frederik Fuhrmann, Timo Heutmann, Alexander Kreppein, Dennis Grunert, Christoph Lange, Robert H. Schmitt, Klaus Wehrle. Offering Two-Way Privacy for Evolved Purchase Inquiries. ACM Transactions on Internet Technology, vol. 23, no. 4. November 2023.

Johannes Lohmöller, Eduard Vlad, Markus Dahlmanns, Klaus Wehrle. Poster: Bridging Trust Gaps: Data Usage Transparency in Federated Data Ecosystems. Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications Security (CCS ’23), Nov 26 - Nov 30, 2023, Copenhagen, Denmark. November 2023.

Markus Dahlmanns, Constantin Sander, Robin Decker, Klaus Wehrle. Secrets Revealed in Container Images: An Internet-wide Study on Occurrence and Impact. Proceedings of the 2023 ACM Asia Conference on Computer and Communications Security (ASIACCS ‘23), Jul 10 - Jul 14, 2023, Melbourne, VIC, Australia. July 2023.

Jan Pennekamp, Anastasiia Belova, Thomas Bergs, Matthias Bodenbenner, Andreas Bührig-Polaczek, Markus Dahlmanns, Ike Kunze, Moritz Kröger, Sandra Geisler, Martin Henze, Daniel Lütticke, Benjamin Montavon, Philipp Niemietz, Lucia Ortjohann, Maximilian Rudack, Robert H. Schmitt, Uwe Vroomen, Klaus Wehrle, Michael Zeng. Evolving the Digital Industrial Infrastructure for Production: Steps Taken and the Road Ahead. Internet of Production: Fundamentals. February 2023.

Tobias Lorz, Johann Jaeger, Antigona Selimaj, Immanuel Hacker, Andreas Ulbig, Jan-Peter Heckel, Christian Becker, Markus Dahlmanns, Ina Berenice Fink, Klaus Wehrle, Gerrit Erichsen, Michael Schindler, Rainer Luxenburger, Guosong Lin. Interconnected grid protection systems - reference grid for testing an adaptive protection scheme. 27th International Conference on Electricity Distribution (CIRED 2023), Jun 12 - Jun 15, 2023, Rome, Italy. January 2023.

Dominik Kus, Eric Wagner, Jan Pennekamp, Konrad Wolsing, Ina Berenice Fink, Markus Dahlmanns, Klaus Wehrle, Martin Henze. A False Sense of Security? Revisiting the State of Machine Learning-Based Industrial Intrusion Detection. Proceedings of the 8th ACM Cyber-Physical System Security Workshop (CPSS ‘22), May 30 - May 30, 2022, Nagasaki Japan. Event co-located with the 17th ACM ASIA Conference on Computer and Communications Security (ASIACCS '22). May 2022.

Markus Dahlmanns, Johannes Lohmöller, Jan Pennekamp, Jörn Bodenhausen, Klaus Wehrle, Martin Henze. Missed Opportunities: Measuring the Untapped TLS Support in the Industrial Internet of Things. Proceedings of the 2022 ACM Asia Conference on Computer and Communications Security (ASIACCS ‘22), May 30 - Jun 3, 2022, Nagasaki, Japan. May 2022.

Matthias Lorenz, Tobias Markus Pletzer, Malte Schuhmacher, Torsten Sowa, Michael Dahms, Simon Stock, Davood Babazadeh, Christian Becker, Johann Jaeger, Tobias Lorz, Markus Dahlmanns, Ina Berenice Fink, Klaus Wehrle, Andreas Ulbig, Philipp Linnartz, Antigona Selimaj, Thomas Offergeld. Interconnected network protection systems - the basis for the reliable and safe operation of distribution grids with a high penetration of renewable energies and electric vehicle. Proceedings of the CIRED workshop on E-mobility and power distribution systems 2022, Jun 2 - Jun 3, 2022, Porto, Portugal. January 2022.

Jan Pennekamp, Erik Buchholz, Markus Dahlmanns, Ike Kunze, Stefan Braun, Eric Wagner, Matthias Brockmann, Klaus Wehrle, Martin Henze. Collaboration is not Evil: A Systematic Look at Security Research for Industrial Use. Proceedings of the Workshop on Learning from Authoritative Security Experiment Results (LASER ‘20), Dec 8 - Dec 8, 2020, Austin, TX, USA. Event co-located with the 36th Annual Computer Security Applications Conference (ACSAC '20). December 2021.

Jan Pennekamp, Frederik Fuhrmann, Markus Dahlmanns, Timo Heutmann, Alexander Kreppein, Dennis Grunert, Christoph Lange, Robert H. Schmitt, Klaus Wehrle. Confidential Computing-Induced Privacy Benefits for the Bootstrapping of New Business Relationships. Blitz Talk at the 2021 Cloud Computing Security Workshop (CCSW ‘21), Nov 15 - Nov 15, 2021, Seoul, Korea. Event co-located with the 28th ACM SIGSAC Conference on Computer and Communications Security (CCS '21). November 2021.

Markus Dahlmanns, Jan Pennekamp, Ina Berenice Fink, Bernd Schoolmann, Klaus Wehrle, Martin Henze. Transparent End-to-End Security for Publish/Subscribe Communication in Cyber-Physical Systems. Proceedings of the 1st ACM Workshop on Secure and Trustworthy Cyber-Physical Systems (SaT-CPS ‘21), Apr 28 - Apr 28, 2021, Virtual Event, USA. Event co-located with the 11th ACM Conference on Data and Application Security and Privacy (CODASPY '21). April 2021.

Jan Pennekamp, Erik Buchholz, Yannik Lockner, Markus Dahlmanns, Tiandong Xi, Marcel Fey, Christian Brecher, Christian Hopmann, Klaus Wehrle. Privacy-Preserving Production Process Parameter Exchange. Proceedings of the 36th Annual Computer Security Applications Conference (ACSAC ‘20), Dec 7 - Dec 11, 2020, Austin, TX, USA. December 2020.

Markus Dahlmanns, Johannes Lohmöller, Ina Berenice Fink, Jan Pennekamp, Klaus Wehrle, Martin Henze. Easing the Conscience with OPC UA: An Internet-Wide Study on Insecure Deployments. Proceedings of the Internet Measurement Conference (IMC ‘20), Oct 27 - Oct 29, 2020, Pittsburgh, PA, USA. October 2020.

Linus Roepert, Markus Dahlmanns, Ina Berenice Fink, Jan Pennekamp, Martin Henze. Assessing the Security of OPC UA Deployments. Proceedings of the 1st ITG Workshop on IT Security (ITSec ‘20), Apr 2 - Apr 3, 2020, Tübingen, Germany. April 2020.

Jan Pennekamp, Markus Dahlmanns, Lars Gleim, Stefan Decker, Klaus Wehrle. Security Considerations for Collaborations in an Industrial IoT-based Lab of Labs. Proceedings of the 3rd IEEE Global Conference on Internet of Things (GCIoT ‘19), Dec 4 - Dec 7, 2019, Dubai, United Arab Emirates. December 2019.

Markus Dahlmanns, Chris Dax, Roman Matzutt, Jan Pennekamp, Jens Hiller, Klaus Wehrle. Privacy-Preserving Remote Knowledge System. Proceedings of the 27th IEEE International Conference on Network Protocols (ICNP ‘19), Oct 8 - Oct 10, 2019, Chicago, IL, USA. October 2019.

Jens Hiller, Jan Pennekamp, Markus Dahlmanns, Martin Henze, Andriy Panchenko, Klaus Wehrle. Tailoring Onion Routing to the Internet of Things: Security and Privacy in Untrusted Environments. Proceedings of the 27th IEEE International Conference on Network Protocols (ICNP ‘19), Oct 8 - Oct 10, 2019, Chicago, IL, USA. October 2019.

Jens Hiller, Karsten Komanns, Markus Dahlmanns, Klaus Wehrle. Regaining Insight and Control on SMGW-based Secure Communication in Smart Grids. Proceedings of the 2019 AEIT International Annual Conference, Sep 18 - Sep 20, 2019, Firenze, Italy. September 2019.