Thomas Krenc
UC San Diego
San Diego Supercomputer Center
9500 Gilman Drive
La Jolla, CA, 92093 - curriculum vitae

I am a postdoctoral researcher at CAIDA, UC San Diego. Before that, I was a postdoc at the CMAND lab at NPS in Monterey, California. I completed my Ph.D. in computer science at the Internet Network Architectures (INET) group, Technische Universität Berlin.
My research efforts are directed towards the security and scalability of distributed systems, as well as the development of infrastructure and data-driven approaches to model and measure the Internet ecosystem.


Internet Science Moonshot: Expanding BGP Data Horizons
Thomas Alfroy, Thomas Holterbach, Thomas Krenc, kc claffy, Cristel Pelsser, In ACM HotNets'23

Coarse-grained Inference of BGP Community Intent
Thomas Krenc, Matthew Luckie, Alexander Marder, kc claffy, In ACM IMC'23

IRR Hygiene in the RPKI Era, Ben Du, Gautam Akiwate, Thomas Krenc, Cecilia Testart, Alexander Marder, Bradley Huffaker, Alex C. Snoeren, and kc claffy, In PAM'22
@inproceedings{du2022irr, title={IRR Hygiene in the RPKI Era}, author={Du, Ben and Akiwate, Gautam and Krenc, Thomas and Testart, Cecilia and Marder, Alexander and Huffaker, Bradley and Snoeren, Alex C and Claffy, Kimberly C}, booktitle={International Conference on Passive and Active Network Measurement}, pages={321--337}, year={2022}, organization={Springer} }

AS-Level BGP Community Usage Classification
Thomas Krenc, Robert Beverly and Georgios Smaragdakis, In ACM IMC'21
[pdf] [website] [article] 
@inproceedings{krenc2021level, title={AS-level BGP community usage classification}, author={Krenc, Thomas and Beverly, Robert and Smaragdakis, Georgios}, booktitle={Proceedings of the 21st ACM Internet Measurement Conference}, pages={577--592}, year={2021} }

Keep your Communities Clean: Exploring the Routing Message Impact of BGP Communities, Thomas Krenc, Robert Beverly and Georgios Smaragdakis, In ACM CoNEXT'20
[pdf] [website] 
@inproceedings{krenc2020keep, title={Keep your communities clean: exploring the routing message impact of BGP communities}, author={Krenc, Thomas and Beverly, Robert and Smaragdakis, Georgios}, booktitle={Proceedings of the 16th International Conference on emerging Networking EXperiments and Technologies}, pages={443--450}, year={2020} }

BGP Prefix Delegations: A Deep Dive, Thomas Krenc and Anja Feldmann, In ACM IMC'16
@inproceedings{krenc2016bgp, title={BGP prefix delegations: a deep dive}, author={Krenc, Thomas and Feldmann, Anja}, booktitle={Proceedings of the 2016 Internet Measurement Conference}, pages={469--475}, year={2016} }

An Internet Census Taken by an Illegal Botnet: A Qualitative Assessment of Published Measurements, Thomas Krenc, Oliver Hohlfeld and Anja Feldmann, In ACM SIGCOMM CCR (2014)
@misc{krenc2014internet, title={An internet census taken by an illegal botnet: a qualitative assessment of published measurements}, author={Krenc, Thomas and Hohlfeld, Oliver and Feldmann, Anja}, journal={ACM SIGCOMM Computer Communication Review}, volume={44}, number={3}, pages={103--111}, year={2014}, publisher={ACM New York, NY, USA} }

On the Benefits of Using a Large IXP As an Internet Vantage Point, Nikolaos Chatzis, Georgios Smaragdakis, Jan Boettger, Thomas Krenc and Anja Feldmann, In ACM IMC'13
@inproceedings{chatzis2013benefits, title={On the benefits of using a large IXP as an Internet vantage point}, author={Chatzis, Nikolaos and Smaragdakis, Georgios and B{\"o}ttger, Jan and Krenc, Thomas and Feldmann, Anja}, booktitle={Proceedings of the 2013 conference on Internet measurement conference}, pages={333--346}, year={2013} }

INFO8011 (Network Infrastructures), Fall 2023, University of Liège
(guest lecture: "Internet Exchange Points")
CSE291-e: Internet Data Science for Cybersecurity, Winter 2023, UCSD
(guest lecture: "BGP Communities")
CSE291: Internet Infrastructure, Fall 2021, UCSD
(guest lecture: "Why IXPs matter")
CS4538: Mobile Device and Wireless Security, Spring 2021, NPS
Network Protocols and Architectures, Fall 2012 - 2018, TU Berlin
(teaching assistant + lecturing)
Internet Routing Seminar, 2013 - 2018, TU Berlin
Internet Measurement Seminar, Spring 2014 - 2015, 2018, TU Berlin
RouterLab, Spring 2014, 2018, 2019, TU Berlin

Passive and Active Measurement (PAM) conference 2022, 2023, 2024

Bachelor / Master Thesis Supervision
BGP Smalltalk: A Systematic Analysis of BGP Attribute Changes
Kamil Balitzki, TU Berlin, 2022
Sources of Change in Internet Protocol Geolocation Databases
Bryan Kauffman, NPS, 2021
Autonomous System Choke Points in Country-Level Network Topology
Eric Regnier, NPS, 2021
Chasing the Unknown: A Predictive Model to Demystify BGP Community Semantics
Joshua Werner, NPS, 2020
Through the Looking Glass: Classifying Anomalous BGP Communities
Joshua Welch, NPS, 2020
The Earth is not a Sphere: On the Geographic Alignment of Autonomous Systems
Kamil Balitzki, TU Berlin, 2019
Re-evaluating the AS-level Multi-Tier Model
Lars Prehn, TU Berlin, 2018
On Inferring Primary AS Paths from BGP Routing Data
Omar Faruque, TU Berlin, 2018
Measurement and Characterization of Address Block Announcements from Different Vantage Points
Md Shihab Karim, TU Berlin, 2017
On the Potentials of Extending Conventional Measurement Tools for Network Deployments using ALTO
Johannes Schütze, TU Berlin, 2016
Measurement and Analysis of the SoShare Hybrid Server-P2P System
Li Boxuan, TU Berlin, 2016
Measuring the Indirect Prefix Delegation using Public Routing Information
Shen Jinji, TU Berlin, 2016