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Henri Jäger
Ph.D. Candidate, Hasso Plattner Institute
first.last@hpi.de
Research Fellow, OpenKRITIS (Insignals GmbH)

I am a PhD student at the Hasso Plattner Institute supervised by Jiska Classen at the chair of Mobile and Wireless Security. My research focuses on reverse engineering proprietary interfaces and wireless protocols, with the goal of democratizing knowledge about mobile information systems in order to evaluate and improve their security. My work is supported by NLnet through the Horizon Europe funding program.

Besides my role as Research Assistant at the Hasso Plattner Institute, I am a contributor at OpenKRITIS where my work engages with regulators, industry, and academia across Europe.

Academia

M.Sc. Cybersecurity
Graduated with distinction
Brandenburg University of Applied Sciences
2019 - 2022
B.Sc. Applied Computer Science
Graduated top of my class

Recent Talks & Publications

Taking a Bite at Apple's Network Stack: Reversing Proprietary Multi-Device Protocols with logfuse
2026, TROOPERS26
Cracking Open What Makes Apple's Low-Latency WiFi So Fast
2025, 39th Chaos Communication Congress
Investigating How Apple's Low-Latency WiFi Speeds Up Sidecar Display, Continuity Camera, and iPhone Mirroring
2025, Master's Thesis at Hasso Plattner Institute

Open-Source Software

Logfuse Toolkit
A cross-device log collection and aggregation toolkit unifying heterogeneous forensic sources into a single timeline.

Awards & Honors

Potsdamer Universitätsstipendium 2024
University of Potsdam
Scholarship for outstanding academic performance.
Potsdamer Universitätsstipendium 2023
University of Potsdam
Best Degree of the Year 2022
Brandenburg University of Applied Sciences
Award for graduating top of the class.