Dipl.-Ing. Dr.techn. Gabriel Karl Gegenhuber, BSc
1090 Wien
Room : 05.26
Courses
Summer term 2026
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051061 VU Information Security
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052000 VU Information Security Management
Winter term 2025
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051061 VU Information Security
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052000 VU Information Security Management
Summer term 2025
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051022 UE Operating Systems
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051061 VU Information Security
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052000 VU Information Security Management
Publications
Security and Privacy Measurements in Cellular Networks: Novel Approaches in a Global Roaming Context. / Gegenhuber, Gabriel Karl.
CCS 2025 - Proceedings of the 2025 ACM SIGSAC Conference on Computer and Communications Security. 2025. p. 4857-4859.
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
Hey there! You are using WhatsApp: Enumerating Three Billion Accounts for Security and Privacy. / Gegenhuber, Gabriel Karl; Frenzel, Philipp É.; Günther, Maximilian et al.
NDSS 2026. 2025.
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
Careless Whisper: Exploiting Silent Delivery Receipts to Monitor Users on Mobile Instant Messengers. / Gegenhuber, Gabriel Karl; Günther, Maximilian; Maier, Markus et al.
28th International Symposium on Research in Attacks, Intrusions and Defenses (RAID 2025). 2025.
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
Prekey Pogo: Investigating Security and Privacy Issues in WhatsApp’s Handshake Mechanism. / Gegenhuber, Gabriel Karl; Frenzel, Philipp É.; Günther, Maximilian et al.
19th USENIX WOOT Conference on Offensive Technologies (WOOT '25). 2025.
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
Poster: SIMulator: SIM Tracing on a (Pico-)Budget. / Gegenhuber, Gabriel K.; Frenzel, Philipp É.; Dabrowski, Adrian.
WiSec 2025 - Proceedings of the 18th ACM Conference on Security and Privacy in Wireless and Mobile Networks: 18th ACM Conference on Security and Privacy in Wireless and Mobile Networks. New York: Association for Computing Machinery, Inc, 2025. p. 288–289 (WISEC Conference Proceedings).
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
Diffie-Hellman Picture Show: Key Exchange Stories from Commercial VoWiFi Deployments. / Gegenhuber, Gabriel Karl; Holzbauer, Florian; Frenzel, Philipp É. et al.
USENIX Security '24. 2024.
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
Why E.T. Can't Phone Home: A Global View on IP-based Geoblocking at VoWiFi. / Gegenhuber, Gabriel Karl; Frenzel, Philipp É.; Weippl, Edgar R.
MOBISYS '24: Proceedings of the 22nd Annual International Conference on Mobile Systems, Applications and Services. New York: Association for Computing Machinery (ACM), 2024. p. 183-195.
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
Never Gonna Give You Up: Exploring Deprecated NULL Ciphers in Commercial VoWiFi Deployments. / Gegenhuber, Gabriel Karl; Frenzel, Philipp É.; Weippl, Edgar.
17th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec 2024). 2024.
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
An Extended View on Measuring Tor AS-level Adversaries. / Gegenhuber, Gabriel Karl (Corresponding author); Maier, Markus; Holzbauer, Florian et al.
In: Computers & Security, Vol. 132, 103302, 01.09.2023.
Publications: Contribution to journal › Article › Peer Reviewed
MobileAtlas: Geographically Decoupled Measurements in Cellular Networks for Security and Privacy Research. / Gegenhuber, Gabriel Karl; Mayer, Wilfried; Weippl, Edgar et al.
Proceedings of the 32nd USENIX Security Symposium. USENIX Association, 2023. p. 3493-3510.
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
Talks
Zero-Rating, One Big Mess: Analyzing Differential Pricing Practices of European MNOs
Gegenhuber, G. K. (Speaker)
Activity: Talks and presentations › Talk or oral contribution › Science to Science
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