Markus Sosnowski, M.Sc.
Research Associate

Postal address
- Institut für Informatik der
- Technischen Universität München
- Lehrstuhl I8
- Boltzmannstr. 3
- 85748 Garching bei München - Germany
Contact
- Tel: +49 89 289 - 18013
- Fax: +49 89 289 - 18033
- e-Mail: sosnowski
net.in.tum.de
ORCID: 0000-0002-7322-5804(GPG: FCFE 0A71 D417 557E BD7E 220A 5D08 C961 52C0 9E73) - Building/Room: MI Building, 03.05.037
Consultation hours
By arrangement
Research
- Internet-wide scanning of hosts and networks
- Analysis of TLS, i.a., to fingerprint network entities
- Analysis of trustfulness of Internet entities
- Graph-based approaches
- Machine learning, clustering, classification, fingerprinting, etc.
Teaching
- Summer term 2022: Teaching Assistant for Grundlagen Rechnernetze und Verteilte Systeme
- Summer term 2021: Teaching Assistant for Grundlagen Rechnernetze und Verteilte Systeme
- Summer term 2020: Teaching Assistant for Grundlagen Rechnernetze und Verteilte Systeme
- Since Summer 2020: Seminar IITM (advisor)
Supervised Theses
In progress
Student | Title | Type | Advisors | Year | Links |
Lukas Bernwald | Towards Consistency in Distributed REST API Caching | MA | Markus Sosnowski, Richard von Seck | 2023 | |
Dan Bachar | Enhancing Distributed REST APIs on the Fly | BA | Markus Sosnowski, Florian Wiedner | 2023 | |
Desiree Rentz | Testing and Grading of Low-Layer Network Programming Assignments Using Concepts of Behavior Driven Development | BA | Markus Sosnowski, Leander Seidlitz, Manuel Simon, Stephan Günther | 2023 | |
Tim Betzer | Propagate Distrust Among Servers Utilizing the Graph Structure of the TLS Ecosystem | IDP | Markus Sosnowski | 2022 | |
Jonas Lang | Towards an Internet-Wide Certificate Revocation Observatory | IDP | Juliane Aulbach, Markus Sosnowski, Patrick Sattler | 2022 | |
Michael Haden | Intrusion Detection using Streaming Network Telemetry | IDP | Kilian Holzinger, Markus Sosnowski, Simon Bauer | 2021 |
|
Finished
Author | Title | Type | Advisors | Year | Links |
Robert Dillitz | Transformation and Evaluation of TLS Behavior Graphs | MA | Johannes Zirngibl, Benedikt Jaeger, Markus Sosnowski | 2022 |
|
Rene Jung | Detecting the Internet Presence of Organizations Utilizing the Graph Structure of the TLS Ecosystem | BA | Markus Sosnowski, Patrick Sattler | 2022 |
|
Felix Myhsok | Blocklists: Who is blocked? | BA | Johannes Zirngibl, Patrick Sattler, Markus Sosnowski | 2021 |
|
Yannik Gehring | Revealing Organizational Structures in an Internet-wide TLS Graph | MA | Markus Sosnowski, Patrick Sattler, Juliane Aulbach | 2021 |
|
Jonas Lang | Large Scale TLS Certificate Revocation Analysis | BA | Juliane Aulbach, Markus Sosnowski | 2021 | |
Tim Betzer | A Systematic TLS Scanning Approach Minimizing the Used Requests and Comparison with other TLS Scanners | GR | Markus Sosnowski, Patrick Sattler | 2021 | |
Christian Kilb | Blocklists: What is blocked and why? | IDP | Johannes Zirngibl, Patrick Sattler, Markus Sosnowski | 2020 |
|
Justus Fries | Graph-based Analysis of Server TLS Parameters | IDP | Markus Sosnowski, Patrick Sattler, Lars Wüstrich | 2020 | |
Muhammed Sahin | Analysis of Servers use of TLS Parameters | IDP | Patrick Sattler, Markus Sosnowski, Lars Wüstrich, Max Helm | 2020 |
|
Tim Betzer | Maximize Information Gain from Internet Scans while Minimizing Impact | BA | Markus Sosnowski, Patrick Sattler | 2020 |
|
Publications
2023-03-01 | Markus Sosnowski, Johannes Zirngibl, Patrick Sattler, Georg Carle, “DissecTLS: A Scalable Active Scanner for TLS Server Configurations, Capabilities, and TLS Fingerprinting,” in Passive and Active Measurement, Mar. 2023, pp. 110–126. [Homepage] [Rawdata] [DOI] [Bib] |
2022-06-01 | Markus Sosnowski, Johannes Zirngibl, Patrick Sattler, Georg Carle, Claas Grohnfeldt, Michele Russo, Daniele Sgandurra, “Active TLS Stack Fingerprinting: Characterizing TLS Server Deployments at Scale,” in Proc. Network Traffic Measurement and Analysis Conference (TMA), Jun. 2022. Best Paper Award [Pdf] [Slides] [Homepage] [Rawdata] [Bib] |