Zeta Avarikioti
Assistant Prof. Dr.sc.ETH
Research Areas
- Security Protocols, computer security, Cybersecurity, Blockchain Technology
About
Zeta holds a PhD from ETH Zürich, advised by Roger Wattenhofer, and completed postdoctoral fellowships at ISTA/Columbia University and TU Wien.
Her research interests focus on distributed systems, scalability and interoperability of blockchain protocols, and the analysis of cryptoeconomic incentives.
Role
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Assistant Professor
Security and Privacy, E192-06
Courses
2026W
- Advanced Topics in Blockchain Technologies / 192.221 / VU
- Bachelor Thesis / 192.061 / PR
- Cryptocurrencies / 192.065 / VU
- Introduction to Blockchain Technologies / 192.220 / VU
- Project in Computer Science 1 / 192.021 / PR
- Project in Computer Science 2 / 192.022 / PR
- Scientific Research and Writing / 193.052 / SE
- Seminar for PhD Students / 192.060 / SE
2027S
- Project in Computer Science 1 / 192.021 / PR
- Project in Computer Science 2 / 192.022 / PR
Projects
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Optimal Cross-Chain and Cross-Layer Protocols (CROSS)
2026 – 2030 / Vienna Science and Technology Fund (WWTF)
Publication: 230777 -
Lionfish: Securing Sui with Sparse Nodes
2025 – 2026 / Sui Foundation -
Ark – novel Bitcoin layer-2 protocol
2024 – 2025 / AKRLabs OÜ -
Scalable, Private, and Interoperable Layer 2
2023 – 2027 / Vienna Science and Technology Fund (WWTF)
Publications: 204483 / 204345 / 209770 / 223687 / 230803 -
A Composable Rational Framework for Blockchain Systems
2022 – 2025 / Austrian Science Fund (FWF)
Publications: 150285 / 191199 / 190025 / 190616 / 190619 / 191168 / 200038 / 204344 / 204483 / 204345 / 209770 / 223687 / 224027 / 230803
Publications
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X-Transfer: Enabling and Optimizing Cross-PCN Transactions
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Aumayr, L., Avarikioti, Z., Salem, I., Schmid, S., & Yeo, M. (2026). X-Transfer: Enabling and Optimizing Cross-PCN Transactions. In C. Garman & P. Moreno-Sanchez (Eds.), Financial Cryptography and Data Security : 29th International Conference, FC 2025, Miyakojima, Japan, April 14–18, 2025, Revised Selected Papers, Part I (pp. 73–90). Springer. https://doi.org/10.1007/978-3-032-07024-1_5
Projects: CoRaF (2022–2025) / SCALE2 (2023–2027) / SFB SPyCoDe (2023–2030) -
Blink: An Optimal Proof of Proof-of-Work
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Aumayr, L., Avarikioti, Z., Maffei, M., Scaffino, G., & Zindros, D. (2026). Blink: An Optimal Proof of Proof-of-Work. In C. Garman & Pedro Moreno-Sanchez (Eds.), Financial Cryptography and Data Security : 29th International Conference, FC 2025, Miyakojima, Japan, April 14–18, 2025, Revised Selected Papers, Part II (pp. 173–190). Springer. https://doi.org/10.1007/978-3-032-07035-7_11
Project: CDL-BOT (2020–2026) -
A Composable Game-Theoretic Framework for Blockchains
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Avarikioti, G., Fuchsbauer, G., Keer, P., Maffei, M., & Regen, F. (2026). A Composable Game-Theoretic Framework for Blockchains. In 2026 IEEE 39th Computer Security Foundations Symposium (CSF) (pp. 513–528). IEEE. https://doi.org/10.1109/CSF68417.2026.00034
Projects: BlockSec (2025–2030) / COnFIDE (2020–2029) / CROSS (2026–2030) / SFB SPyCoDe (2023–2030) - 7th Conference on Advances in Financial Technologies : AFT 2025, October 8–10, 2025, Pittsburgh, PA, USA / Avarikioti, Z., & Christin, N. (Eds.). (2025). 7th Conference on Advances in Financial Technologies : AFT 2025, October 8–10, 2025, Pittsburgh, PA, USA (Vol. 354). Dagstuhl Publishing. https://doi.org/10.4230/LIPIcs.AFT.2025
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Alba: The Dawn of Scalable Bridges for Blockchains
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Scaffino, G., Aumayr, L., Bastankhah, M., Avarikioti, Z., & Maffei, M. (2025). Alba: The Dawn of Scalable Bridges for Blockchains. In Proceedings 2025 Network and Distributed System Security Symposium. 32nd Network and Distributed System Security Symposium (NDSS Symposium 2025), San Diego, United States of America (the). Internet Society. https://doi.org/10.14722/ndss.2025.241286
Download: Paper (2.08 MB)
Projects: Browsec (2018–2024) / CDL-BOT (2020–2026) / CoRaF (2022–2025) / SCALE2 (2023–2027) / SFB SPyCoDe (2023–2030) -
Securing Lightning Channels against Rational Miners
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Aumayr, L., Avarikioti, Z., Maffei, M., & Mazumdar, S. (2024). Securing Lightning Channels against Rational Miners. In B. Luo, X. Liao, & J. Xu (Eds.), Proceedings of the 2024 on ACM SIGSAC Conference on Computer and Communications Security (pp. 393–407). https://doi.org/10.1145/3658644.3670373
Download: Paper (1.21 MB)
Projects: Browsec (2018–2024) / CDL-BOT (2020–2026) / CoRaF (2022–2025) / DLDaI (2022–2024) / PR4DLT (2018–2021) / SCALE2 (2023–2027) / SFB SPyCoDe (2023–2030) -
Musketeer: Incentive-Compatible Rebalancing for Payment Channel Networks
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Avarikioti, Z., Schmid, S., & Tiwari, S. (2024). Musketeer: Incentive-Compatible Rebalancing for Payment Channel Networks. In R. Böhme & L. Kiffer (Eds.), 6th Conference on Advances in Financial Technologies (AFT 2024) (pp. 1–22). https://doi.org/10.4230/LIPIcs.AFT.2024.13
Download: Paper Published Version (1.01 MB)
Projects: CoRaF (2022–2025) / SCALE2 (2023–2027) / SFB SPyCoDe (2023–2030) - Route Discovery in Private Payment Channel Networks / Avarikioti, G., Bastankhah, M., Maddah-Ali, M. A., Pietrzak, K., Svoboda, J., & Yeo, M. (2024). Route Discovery in Private Payment Channel Networks. In DPM & CBT 2024 Pre-proceedings (pp. 195–211). http://hdl.handle.net/20.500.12708/210627
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Bribe & Fork: Cheap PCN Bribing Attacks via Forking Threat
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Avarikioti, Z., Kędzior, P., Lizurej, T., & Michalak, T. (2024). Bribe & Fork: Cheap PCN Bribing Attacks via Forking Threat. In R. Böhme & L. Kiffer (Eds.), 6th Conference on Advances in Financial Technologies (AFT 2024) (pp. 1–22). https://doi.org/10.4230/LIPIcs.AFT.2024.11
Projects: CoRaF (2022–2025) / SFB SPyCoDe (2023–2030) -
Brief Announcement: Musketeer - Incentive-Compatible Rebalancing for Payment Channel Networks
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Avarikioti, Z., Schmid, S., & Tiwari, S. (2024). Brief Announcement: Musketeer - Incentive-Compatible Rebalancing for Payment Channel Networks. In PODC ’24: Proceedings of the 43rd ACM Symposium on Principles of Distributed Computing (pp. 306–309). https://doi.org/10.1145/3662158.3662809
Projects: CoRaF (2022–2025) / SCALE2 (2023–2027) / SFB SPyCoDe (2023–2030) -
Glimpse: On-Demand PoW Light Client with Constant-Size Storage for DeFi
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Scaffino, G., Aumayr, L., Avarikioti, G., & Maffei, M. (2023). Glimpse: On-Demand PoW Light Client with Constant-Size Storage for DeFi. In Proceedings of the 32nd USENIX Security Symposium (pp. 733–750).
Projects: Browsec (2018–2024) / CDL-BOT (2020–2026) / CoRaF (2022–2025) / SFB SPyCoDe (2023–2030) -
FnF-BFT: A BFT Protocol with Provable Performance Under Attack
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Avarikioti, G., Heimbach, L., Schmid, R., Vanbever, L., Wattenhofer, R., & Wintermeyer, P. (2023). FnF-BFT: A BFT Protocol with Provable Performance Under Attack. In S. Rajsbaum, A. Balliu, J. Dymude, & D. Olivetti (Eds.), Structural Information and Communication Complexity : 30th International Colloquium, SIROCCO 2023, Alcalá de Henares, Spain, June 6–9, 2023, Proceedings (pp. 165–198). Springer. https://doi.org/10.1007/978-3-031-32733-9_9
Project: CoRaF (2022–2025) -
Divide & Scale: Formalization and Roadmap to Robust Sharding
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Avarikioti, G., Desjardins, A., Kokoris-Kogias, L., & Wattenhofer, R. (2023). Divide & Scale: Formalization and Roadmap to Robust Sharding. In S. Rajsbaum, A. Balliu, J. Daymude, & D. Olivetti (Eds.), Structural Information and Communication Complexity : 30th International Colloquium, SIROCCO 2023, Alcalá de Henares, Spain, June 6–9, 2023, Proceedings (pp. 199–245). Springer. https://doi.org/10.1007/978-3-031-32733-9_10
Project: CoRaF (2022–2025) -
Lightning Creation Games
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Avarikioti, G., Lizurej, T., Michalak, T., & Yeo, M. (2023). Lightning Creation Games. In E. Bertino, B. Li, O. Frieder, & X. Jia (Eds.), 2023 IEEE 43rd International Conference on Distributed Computing Systems (ICDCS 2023) (pp. 603–613). IEEE. https://doi.org/10.1109/ICDCS57875.2023.00037
Project: CoRaF (2022–2025) -
Towards a Game-Theoretic Security Analysis of Off-Chain Protocols
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Rain, S., Avarikioti, G., Kovacs, L., & Maffei, M. (2023). Towards a Game-Theoretic Security Analysis of Off-Chain Protocols. In 2023 IEEE 36th Computer Security Foundations Symposium (CSF) (pp. 107–122). IEEE. https://doi.org/10.1109/CSF57540.2023.00003
Projects: Browsec (2018–2024) / CDL-BOT (2020–2026) / LCS (2017–2025) / PROFET (2019–2023) / ViSP (2019–2023) -
Hide & Seek: Privacy-Preserving Rebalancing on Payment Channel Networks
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Avarikioti, G., Pietrzak, K., Salem, I., Schmid, S., Tiwari, S., & Yeo, M. (2022). Hide & Seek: Privacy-Preserving Rebalancing on Payment Channel Networks. In I. Eyal & J. Garay (Eds.), Financial Cryptography and Data Security (pp. 358–373). Springer-Verlag. https://doi.org/10.1007/978-3-031-18283-9_17
Projects: CoRaF (2022–2025) / ViSP (2019–2023) -
Suborn Channels: Incentives Against Timelock Bribes
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Avarikioti, G., & Thyfronitis Litos, O. S. (2022). Suborn Channels: Incentives Against Timelock Bribes. In Financial Cryptography and Data Security (pp. 488–511). Springer Nature Switzerland AG. https://doi.org/10.34726/3904
Download: Paper (556 KB) -
Wiser: Increasing Throughput in Payment Channel Networks with Transaction Aggregation
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Tiwari, S., Yeo, M., Avarikioti, G., Salem, I., Pietrzak, K., & Schmid, S. (2022). Wiser: Increasing Throughput in Payment Channel Networks with Transaction Aggregation. In AFT ’22: Proceedings of the 4th ACM Conference on Advances in Financial Technologies (pp. 217–231). Association for Computing Machinery. https://doi.org/10.1145/3558535.3559775
Download: PDF (561 KB)
Projects: CoRaF (2022–2025) / ViSP (2019–2023)
Supervisions
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Sparse and event-based client designs for EVM-compatible blockchains : a sparse node implementation for ethereum
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Slowak, P. (2025). Sparse and event-based client designs for EVM-compatible blockchains : a sparse node implementation for ethereum [Diploma Thesis, Technische Universität Wien]. reposiTUm. https://doi.org/10.34726/hss.2025.135085
Download: PDF (4.52 MB) -
Devising a privacy-preserving multi-token payment system as an optimistic L2 rollup
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Apel, D. F. P. (2025). Devising a privacy-preserving multi-token payment system as an optimistic L2 rollup [Diploma Thesis, Technische Universität Wien]. reposiTUm. https://doi.org/10.34726/hss.2025.127764
Download: PDF (1.23 MB)