Dr. R. Holz | People Pages: Find employees & contact details

I am a Full Professor at the University of Münster, and I also work part-time in the Design and Analysis of Communication Systems Group at the University of Twente.

Until 2019, I was a Lecturer in Networks and Security at the University of Sydney (that’s Asst. Prof. in other systems), Australia. Before that, I was a Researcher at NICTA (later CSIRO's Data61), also in Sydney, where I worked on network security and was part of the Security Business Team.

I hold a PhD from Technical University of Munich. I did both my post-grad and under-grad studies at Eberhard Karls University, Tuebingen, one of Germany’s classic universities.

Organisations

My research interests revolve around understanding and improving the Internet for everyone, with a particular focus on security aspects. Most recently, I have been working on

Global-scale measurement of Internet service deployments and their security
Data-driven security mechanisms
Analysis of emerging technology and its implications

I view my work through the lens of real-world implications. The tech is not always what matters—it’s the embedding in our world that makes it meaningful. Hence, I work with other disciplines and industry alike to make the Internet a safer, more secure, and altogether more interesting and useful place.

Publications

2024

Analysis of DNS Dependencies and their Security Implications in Australia: A Comparative Study of General and Indigenous Populations (2024)[Working paper › Preprint]. ArXiv.org. Nazemi, N., Tavallaie, O., Mandalari, A. M., Haddadi, H., Holz, R. & Zomaya, A. Y.https://doi.org/10.48550/arXiv.2408.12958Assessing the security of Internet paths: A case study of Dutch critical infrastructures (2024)In ANRW 2024 - Proceedings of the 2024 Applied Networking Research Workshop (pp. 67-73). Association for Computing Machinery. Khadka, S. K., Bayhan, S., Holz, R. & Hesselman, C. E. W.https://doi.org/10.1145/3673422.3674899Towards Security Transparency of Autonomous Systems on the Internet (2024)In Computer Security. ESORICS 2023 International Workshops: CPS4CIP, ADIoT, SecAssure, WASP, TAURIN, PriST-AI, and SECAI, The Hague, The Netherlands, September 25–29, 2023, Revised Selected Papers, Part II (pp. 510-513) (Lecture Notes in Computer Science; Vol. 14399). Springer Nature. Khadka, S. K., Holz, R. & Hesselman, C.https://doi.org/10.1007/978-3-031-54129-2_30

2023

Packed to the Brim: Investigating the Impact of Highly Responsive Prefixes on Internet-wide Measurement Campaigns (2023)Proceedings of the ACM on Networking, 1(3). Article 24. Sattler, P., Zirngibl, J., Jonker, M., Gasser, O., Carle, G. & Holz, R.https://doi.org/10.1145/3629146Mobile apps and children's privacy: A traffic analysis of data sharing practices among children's mobile iOS apps (2023)Archives of disease in childhood, 108(11), 943-945. Pimienta, J., Brandt, J., Bethe, T., Holz, R., Continella, A., Jibb, L. & Grundy, Q.https://doi.org/10.1136/archdischild-2023-325960Packed to the Brim: Investigating the Impact of Highly Responsive Prefixes on Internet-wide Measurement Campaigns (2023)[Working paper › Preprint]. ArXiv.org. Sattler, P., Zirngibl, J., Jonker, M., Gasser, O., Carle, G. & Holz, R.https://doi.org/10.48550/arXiv.2310.17012Anycast in the age of hypergiants: Towards tools and techniques for the other 99% of ASes (2023)[Thesis › PhD Thesis - Research UT, graduation UT]. University of Twente. Bertholdo, L.https://doi.org/10.3990/1.9789036557320Quantifying Security Risks in Cloud Infrastructures: A Data-driven Approach (2023)In 2023 IEEE 9th International Conference on Network Softwarization (NetSoft). IEEE. Tarahomi, S., Holz, R. & Sperotto, A.https://doi.org/10.1109/NetSoft57336.2023.10175501Hazardous Echoes: The DNS Resolvers that Should Be Put on Mute (2023)In 2023 7th Network Traffic Measurement and Analysis Conference (TMA) (pp. 1-10). IEEE. Yazdani, R., Nosyk, Y., Holz, R., Korczyński, M., Jonker, M. & Sperotto, A.https://doi.org/10.23919/TMA58422.2023.10198955An Anycast Federation for DNS Resolvers (2023)[Contribution to conference › Abstract]. Bertholdo, L. M., Holz, R., van Rijswijk - Deij, R. M., Granville, L. Z. & Hesselman, C. E. W.https://ant.isi.edu/events/dinr2023/program.html

Research profiles

I currently teach:

Empirical Security Analysis & Engineering (202100073)

I am a Fellow of the UK's Higher Education Academy.

Affiliated study programs

Courses academic year 2024/2025

Courses in the current academic year are added at the moment they are finalised in the Osiris system. Therefore it is possible that the list is not yet complete for the whole academic year.

Courses academic year 2023/2024

Address

University of Twente

Zilverling (building no. 11)
Hallenweg 19
7522 NH Enschede
Netherlands

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