Markus Sosnowski, M.Sc.

Consultation hours

By arrangement

Research

  • software development, software- / enterprise architectures, and large computer networks,
  • understanding and modeling the Internet with active measurements,
  • focus on the TLS ecosystem and derivable security related insights,
  • Content Delivery Networks (CDNs) and novel approaches to model, distribute, and cache application data.

Teaching

Publications

2024-10-01 Markus Sosnowski, Richard von Seck, Florian Wiedner, Georg Carle, “CRDT Web Caching: Enabling Distributed Writes and Fast Cache Consistency for REST APIs,” in Proc. 20th International Conference on Network and Service Management (CNSM), Prague, Czech Republic, Oct. 2024. [Pdf] [Homepage] [DOI] [Bib]
2024-07-01 Markus Sosnowski, Johannes Zirngibl, Patrick Sattler, Juliane Aulbach, Jonas Lang, Georg Carle, “An Internet-wide View on HTTPS Certificate Revocations: Observing the Revival of CRLs via Active TLS Scans,” in Proc. IEEE European Symposium on Security and Privacy Workshops (EuroS&PW), Jul. 2024. [Pdf] [DOI] [Bib]
2024-06-01 Markus Sosnowski, Johannes Zirngibl, Patrick Sattler, Georg Carle, Claas Grohnfeldt, Michele Russo, Daniele Sgandurra, “EFACTLS: Effective Active TLS Fingerprinting for Large-scale Server Deployment Characterization,” IEEE Transactions on Network and Service Management, vol. 21, no. 3, pp. 2582–2595, Jun. 2024. [Homepage] [Rawdata] [DOI] [Bib]
2024-05-01 Markus Sosnowski, Patrick Sattler, Johannes Zirngibl, Tim Betzer, Georg Carle, “Propagating Threat Scores With a TLS Ecosystem Graph Model Derived by Active Measurements,” in Proc. Network Traffic Measurement and Analysis Conference (TMA), May 2024. [Pdf] [Slides] [Homepage] [DOI] [Bib]
2024-03-01 Johannes Zirngibl, Florian Gebauer, Patrick Sattler, Markus Sosnowski, Georg Carle, “QUIC Hunter: Finding QUIC Deployments and Identifying Server Libraries Across the Internet,” in Passive and Active Measurement Conference (PAM), Mar. 2024. [Homepage] [DOI] [Bib]
2023-12-01 Markus Sosnowski, Florian Wiedner, Eric Hauser, Lion Steger, Dimitrios Schoinianakis, Sebastian Gallenmüller, Georg Carle, “The Performance of Post-Quantum TLS 1.3,” in Proc. International Conference on emerging Networking EXperiments and Technologies (CoNEXT), Paris, France, Dec. 2023. [Pdf] [Preprint] [Slides] [Homepage] [Recording] [DOI] [Bib]
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. [Pdf] [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]