Dipl.-Ing. Dr.techn. Aljosha Judmayer, BSc

Send and Pretend: Exploiting Transcript Consistency Issues in End-to-End Encrypted Group Chats. / Gegenhuber, Gabriel Karl; Grefner, Moritz; Günther, Maximilian et al.
USENIX Security Symposium 2026. 2026.

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed

Reuse of Public Keys Across UTXO and Account-Based Cryptocurrencies. / Stütz, Rainer; Stifter, Nicholas; Dragaschnig, Melitta et al.
Financial Cryptography and Data Security 2026. 2026.

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

Blockchain-Babel: Herausforderungen bei der Entwicklung präziser Begrifflichkeiten zwischen Recht und Technik im Kontext von Kryptowährungen und Distributed-Ledger-Technologien. / Stifter, Nicholas; Judmayer, Aljosha; Putz, Evelyne et al.
Handbuch Besteuerung von Kryptowährungen. ed. / Sabine Kirchmayr; Martin Miernicki; Arthur Weilinger; Alexandra Wild; Alexander Wimmer. Wien: Facultas, 2023.

Publications: Contribution to book › Chapter › Peer Reviewed

Estimating (Miner) Extractable Value is Hard, Let's Go Shopping! / Judmayer, Aljosha (Corresponding author); Stifter, Nicholas; Schindler, Philipp et al.
Financial Cryptography and Data Security. FC 2022 International Workshops - CoDecFin, DeFi, Voting, WTSC, Revised Selected Papers: CoDecFin, DeFi, Voting, WTSC, Grenada, May 6, 2022, Revised Selected Papers. ed. / Shin'ichiro Matsuo; Lewis Gudgeon; Ariah Klages-Mundt; Daniel Perez Hernandez; Sam Werner; Thomas Haines; Aleksander Essex; Andrea Bracciali; Massimiliano Sala. Cham: Springer, 2023. p. 74-92 (Lecture Notes in Computer Science, Vol. 13412).

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed

Challenges and Opportunities of Blockchain for Auditable Processes in the Healthcare Sector. / Fdhila, Walid; Stifter, Nicholas; Judmayer, Aljosha.
Business Process Management (BPM): Blockchain, Robotic Process Automation, and Central and Eastern Europe Forum. Cham: Springer, 2022. p. 68-83.

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed

Opportunistic Algorithmic Double-Spending: How I learned to Stop Worrying and Love the Fork. / Stifter, Nicholas (Corresponding author); Judmayer, Aljosha; Schindler, Philipp et al.
Computer Security – ESORICS 2022: 27th European Symposium on Research in Computer Security, Proceedings. ed. / Vijayalakshmi Atluri; Roberto Di Pietro; Christian D. Jensen; Weizhi Meng. Cham: Springer, 2022. p. 46-66 (Lecture Notes in Computer Science, Vol. 13554).

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed