Dipl.-Ing. Dr.techn. Aljosha Judmayer, BSc
1090 Wien
Room : 05.26
Courses
Winter term 2026
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052012 VU Software Security
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052014 VU Cryptography
Summer term 2026
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052011 VU Security and Privacy Engineering
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052715 VU Network Security
Winter term 2025
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052000 VU Information Security Management
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052011 VU Security and Privacy Engineering
Publications
RandRunner: Distributed Randomness from Trapdoor VDFs with Strong Uniqueness. / Schindler, Philipp; Judmayer, Aljosha; Hittmeir, Markus et al.
2021 Network and Distributed System Security Symposium (NDSS). 2021.
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
Pay to Win: Cheap, Cross-Chain Bribing Attacks on PoW Cryptocurrencies. / Judmayer, Aljosha (Corresponding author); Stifter, Nicholas; Zamyatin, Alexei et al.
Financial Cryptography and Data Security. FC 2021 International Workshops: CoDecFin, DeFi, VOTING, and WTSC, Virtual Event, March 5, 2021, Revised Selected Papers. Berlin, Heidelberg: Springer, 2021. p. 533-549 (Lecture Notes in Computer Science, Vol. 12676).
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
SoK: Algorithmic Incentive Manipulation Attacks on Permissionless PoW Cryptocurrencies. / Judmayer, Aljosha (Corresponding author); Stifter, Nicholas; Zamyatin, Alexei et al.
Financial Cryptography and Data Security. FC 2021 International Workshops: CoDecFin, DeFi, VOTING, and WTSC, Virtual Event, March 5, 2021, Revised Selected Papers. ed. / Matthew Bernhard; Andrea Bracciali; Lewis Gudgeon; Thomas Haines; Ariah Klages-Mundt; Shin'ichiro Matsuo; Daniel Perez; Massimiliano Sala; Sam Werner. Berlin: Springer, 2021. p. 507-532 (Lecture Notes in Computer Science, Vol. 12676).
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
Unnecessary Input Heuristics and PayJoin Transactions. / Ghesmati, Simin (Corresponding author); Kern, Andreas; Judmayer, Aljosha et al.
HCI International 2021 - Posters: 23rd HCI International Conference, HCII 2021, Virtual Event, July 24–29, 2021, Proceedings, Part II. ed. / Constantine Stephanidis; Margherita Antona; Stavroula Ntoa. Cham: Springer, 2021. p. 416-424 (Communications in Computer and Information Science (CCIS), Vol. 1420).
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
HydRand: Efficient Continuous Distributed Randomness. / Schindler, Philipp; Judmayer, Aljosha; Stifter, Nicholas et al.
Proceedings - 2020 IEEE Symposium on Security and Privacy, SP 2020. IEEE, 2020. p. 73-89 9152802.
Publications: Contribution to book › Contribution to proceedings › Peer Reviewed
Projects
Secure Key Management
Weippl, E. (Project Lead), Putz, E. (Scientific Project Staff), Judmayer, A. (Scientific Project Staff) & Limbeck-Lilienau, B. (Admin)
1/07/23 → 31/12/26
Project: Research cooperation
Christian Doppler Labor für Verbesserung der Sicherheit von Informationsprozessen in Produktionssystemen (CDL-SQI)
Weippl, E. (Project Lead), Ullrich, J. (Scientific Project Staff), Stifter, N. (Scientific Project Staff), Schindler, P. (Scientific Project Staff), Ekelhart, A. (Scientific Project Staff), Eckhart, M. (Scientific Project Staff), Judmayer, A. (Scientific Project Staff), Holzinger, K. (Scientific Project Staff) & Schuhmacher, B. (Technical Project Staff)
1/04/20 → 31/12/24
Project: Research cooperation
Talks
Challenges and Opportunities of Blockchain for Auditable Processes in the Healthcare Sector
Fdhila, W. (Speaker), Stifter, N. (Contributor) & Judmayer, A. (Contributor)
Activity: Talks and presentations › Talk or oral contribution › Science to Science
Blockchain Summit Mysterium Blockchain
Judmayer, A. (Invited speaker)
Activity: Talks and presentations › Talk or oral contribution › Science to Public
Panel Discussion on Crypto Finance and Decentralized Finance
Judmayer, A. (Speaker)
Activity: Talks and presentations › Talk or oral contribution › Science to Science
Paper Presentation -- How much is the fork? Fast Probability and Profitability Calculation during Temporary Forks
Judmayer, A. (Speaker)
Activity: Talks and presentations › Talk or oral contribution › Science to Science
Vortrag beim ViSP Meetup: This is fine? An informal look at open issues in cryptocurrencies
Judmayer, A. (Speaker) & Stifter, N. (Speaker)
Activity: Talks and presentations › Talk or oral contribution › Science to Public
Vortrag auf der Austrian Blockchain Center Conference, Session 4 Analytics, Security and Trust: Pay to Win: Incentive attacks on Cryptocurrencies
Judmayer, A. (Speaker) & Stifter, N. (Speaker)
Activity: Talks and presentations › Talk or oral contribution › Science to Science
Talk at 5th Workshop on Trusted Smart Contracts In Association with Financial Cryptography: Algorithmic Incentive Manipulation Attacks on Permissionless PoW Cryptocurrencies
Judmayer, A. (Speaker)
Activity: Talks and presentations › Talk or oral contribution › Science to Science
Talk at 5th Workshop on Trusted Smart Contracts In Association with Financial Cryptography: Pay To Win: Cheap, Cross-chain Bribing Attacks on PoW Cryptocurrencies
Judmayer, A. (Speaker)
Activity: Talks and presentations › Talk or oral contribution › Science to Science