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Mobile and Wireless Security
Publications & Talks
Publications
Unlocking Apple's Private Cloud Compute: An Analysis of Privacy-Preserving Artificial Intelligence
Yannik Dittmar, Marvin Jerome Stephan, Thomas Völkl, Matthias Hollick, and Jiska Classen (2026). WiSec.
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Demo: Recent Advancements in Detecting Cellular Attacks with CellGuard
Swantje Lange, Lukas Arnold, Maximilian Paß, Matthias Hollick, Jiska Classen (2026). WiSec.
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Bad Connection: Uncovering Global Telecom Exploitation by Covert Surveillance Actors
Gary Miller, Swantje Lange (2026). The Citizen Lab Report.
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Modern iOS Security Features - A Deep Dive into SPTM, TXM, and Exclaves
Moritz Steffin, Jiska Classen (2025). Preprint.
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Privacy Promises Unmasked: A Comprehensive Study of Privacy Proxies for the Masses
Heiko Kiesel, Jiska Classen (2025). MobiHoc.
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WatchWitch: Interoperability, Privacy, and Autonomy for the Apple Watch
Nils Rollshausen, Alexander Heinrich, Matthias Hollick, Jiska Classen (2025). Proceedings on Privacy Enhancing Technologies.
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Starshields for iOS: Navigating the Security Cosmos in Satellite Communication
Jiska Classen, Alexander Heinrich, Fabian Portner, Felix Rohrbach, Matthias Hollick (2025). Network and Distributed
System Security (NDSS) Symposium.
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Wherever I May Roam: Stealthy Interception and Injection Attacks through Roaming Agreements
Swantje Lange, Francesco Gringoli, Matthias Hollick, Jiska Classen (2024). Computer Security - ESORICS.
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To Boldly Go Where No Fuzzer Has Gone Before: Finding Bugs in Linux’ Wireless Stacks through VirtIO Devices
Sönke Huster, Matthias Hollick, Jiska Classen (2024). IEEE Symposium on Security and Privacy (SP).
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SoK: On the Effectiveness of Control-Flow Integrity in Practice
Lucas Becker, Matthias Hollick, Jiska Classen (2024). 18th USENIX WOOT Conference on Offensive Technologies.
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Catch You Cause I Can: Busting Rogue Base Stations using CellGuard and the Apple Cell Location Database
Lukas Arnold, Matthias Hollick, Jiska Classen (2024). Proceedings of the 27th International Symposium on Research in Attacks, Intrusions and Defenses.
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Talks
Henri Jäger (2025).
“Cracking open what makes Apple's Low-Latency WiFi so fast”. 39th Chaos Communication Congress.
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Marie Fischer (2025).
“What’s New in Lockdown Mode?”. OBTSv8.
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Callista Gratz (2025).
“It's All Fun & Games: Analyzing the Authentication Protocol in Apple's Private Cloud Compute”. OBTSv8.
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Jiska Classen (2024).
“Detecting Fake Base Stations with CellGuard on iOS” and “iOS Inactivity Reboot”. 38th Chaos Communication Congress.
More
Swantje Lange (2024).
“How Roaming Agreements Enable 5G MitM Attacks”. 38th Chaos Communication Congress.
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Aaron Schlitt (2024).
“Breaking the Mirror – A Look at Apple’s New iPhone Remote Control Feature”. 38th Chaos Communication Congress.
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Lina Wilske (2024).
“Understanding Time Formats in iOS Sysdiagnose for Sec Forensics”. OBTSv7.
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Lukas Arnold (2024).
“Unraveling the iPhone’s Baseband Architecture to Defend Against Cellular Attacks”. OBTSv7.
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Jiska Classen, Alexander Heinrich (2023).
“Bifröst: Apple's Rainbow Bridge for Satellite Communication”. 37th Chaos Communication Congress.
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Jiska Classen, Alexander Heinrich (2023).
“Stewie Talking to Apple's Satellite Network”. OBTS v6.0.
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