Professor Mark Ryan

Professor Mark Ryan

School of Computer Science
Professor in Computer Security

Contact details

Address
School of Computer Science
University of Birmingham
Edgbaston
Birmingham
B15 2TT
UK

Mark Ryan is a Professor in Computer Security for the School of Computer Science and the lead for the Centre of Security and Privacy at the University of Birmingham. For more information, please see Mark's homepage.

Publications

Recent publications

Article

Li, R, Li, Y, Wang, Q, Duan, S, Wang, Q & Ryan, M 2025, 'Accountable Decryption Made Formal and Practical', IEEE Transactions on Information Forensics and Security, vol. 20, 10798458, pp. 620-635. https://doi.org/10.1109/TIFS.2024.3515808

Zhang, M, Wang, C, Jiang, W, Oswald, D, Murray, T, Marin, E, Wei, J, Ryan, M & Kostakos, V 2025, 'Using Vibration for Secure Pairing with Implantable Medical Devices: Development and Usability Study', JMIR Biomedical Engineering, vol. 10, e57091. https://doi.org/10.2196/57091

Conference article

Li, R, Wang, Q, Wang, Q, Galindo, D & Ryan, M 2022, 'SoK: TEE-assisted confidential smart contract', Proceedings on Privacy Enhancing Technologies, vol. 2022, no. 3, pp. 711-731. https://doi.org/10.56553/popets-2022-0093

Conference contribution

Liu, E, Ryan, M, Zhou, L & Berrang, P 2026, Evasion Under Blockchain Sanctions. in WWW '26: Proceedings of the ACM Web Conference 2026. Association for Computing Machinery (ACM), WWW'26, Dubai, United Arab Emirates, 13/04/26.

Spielman, J, Oswald, D, Ryan, M & Van Bulck, J 2025, Activation Functions Considered Harmful: Recovering Neural Network Weights through Controlled Channels. in 28th International Symposium on Research in Attacks, Intrusions and Defenses (RAID 2025). IEEE, 28th International Symposium on Research in Attacks, Intrusions, and Defenses, Gold Coast, Australia, 19/10/25.

Zhang, C, Yang, X, Oswald, D, Ryan, M & Jovanovic, P 2025, Eva: Efficient Privacy-Preserving Proof of Authenticity for Lossily Encoded Videos. in 2025 IEEE Symposium on Security and Privacy (SP)., 11023495, IEEE Symposium on Security and Privacy, IEEE, pp. 4643-4662, 46th IEEE Symposium on Security and Privacy, San Francisco, California, United States, 12/05/25. https://doi.org/0.1109/SP61157.2025.00237

Zhang, M, Marin, E, Ryan, M, Kostakos, V, Murray, T, Tag, B & Oswald, D 2024, OOBKey: Key Exchange with Implantable Medical Devices Using Out-Of-Band Channels. in ARES '24: Proceedings of the 19th International Conference on Availability, Reliability and Security., 191, Association for Computing Machinery (ACM), 19th International Conference on Availability, Reliability and Security, Vienna, Austria, 30/07/24. https://doi.org/10.1145/3664476.3670876

Fentham, D, Parker, D & Ryan, M 2024, Using Reed-Muller Codes for Classification with Rejection and Recovery. in M Mosbah, F Sèdes, N Tawb, T Ahmed, N Boulahia-Cuppens & J Garcia-Alfaro (eds), Foundations and Practice of Security: 16th International Symposium, FPS 2023, Bordeaux, France, December 11–13, 2023, Revised Selected Papers, Part I. 1 edn, Lecture Notes in Computer Science, vol. 14551, Springer, pp. 36-52, 16th International Symposium on Foundations and Practice of Security, Bordeaux, France, 11/12/23. https://doi.org/10.1007/978-3-031-57537-2_3

Cheval, V, Moreira, J & Ryan, M 2023, Automatic verification of transparency protocols. in 2023 IEEE 8th European Symposium on Security and Privacy (EuroS&P). IEEE European Symposium on Security and Privacy, IEEE, pp. 107-121, 8th IEEE European Symposium on Security and Privacy, Delft, Netherlands, 3/07/23. https://doi.org/10.1109/EuroSP57164.2023.00016

Moreira-Sanchez, J, Ryan, M & Garcia, F 2022, Protocols for a two-tiered trusted computing base. in V Atluri, R Di Pietro, C D. Jensen & W Meng (eds), Computer Security – ESORICS 2022: 27th European Symposium on Research in Computer Security, Copenhagen, Denmark, September 26–30, 2022, Proceedings, Part III. 1 edn, Lecture Notes in Computer Science, vol. 13556, Springer, Cham, pp. 229–249, 27th European Symposium on Research in Computer Security, Copenhagen, Denmark, 26/09/22. https://doi.org/10.1007/978-3-031-17143-7_12

Laing, T, Marin, E, Ryan, MD, Schiffman, J & Wattiau, G 2022, Symbolon: Enabling Flexible Multi-device-based User Authentication. in 2022 IEEE Conference on Dependable and Secure Computing (DSC)., 9888854, IEEE Conference on Dependable and Secure Computing, Institute of Electrical and Electronics Engineers (IEEE), 5th IEEE Conference on Dependable and Secure Computing, DSC 2022, Edinburgh, United Kingdom, 22/06/22. https://doi.org/10.1109/DSC54232.2022.9888854

Paper

Chen, L, Ho, CH, Ryan, M & Williamson, C 2025, 'Temporally-limited blind-regroup of anonymous credentials', pp. 75-93. https://doi.org/10.1145/3733802.3764056

Preprint

Spielman, J, Oswald, D, Ryan, M & Van Bulck, J 2025 'Activation Functions Considered Harmful: Recovering Neural Network Weights through Controlled Channels' arXiv. <https://arxiv.org/abs/2503.19142>

Zhang, C, Yang, X, Oswald, D, Ryan, M & Jovanovic, P 2024 'Eva: Efficient IVC-Based Authentication of Lossy-Encoded Videos' Cryptology ePrint Archive. <https://eprint.iacr.org/2024/1436>

Cheval, V, Moreira, J & Ryan, M 2023 'Automatic verification of transparency protocols (extended version)' arXiv. https://doi.org/10.48550/arXiv.2303.04500

View all publications in research portal

Expertise

Computer security, cloud computing, electronic voting, TPM, trusted computing, hardware-based security, Google, Linux, software security, privacy, mobile security, wireless communication, online privacy, privacy protection.

Expertise

Computer security; cloud computing, electronic voting; TPM, trusted computing; hardware-based security; Google; Linux; software security; privacy; mobile security; wireless communication; online privacy; privacy protection; and crypto-currencies in which there are several mutually-distrusting parties web-based systems.

Policy experience

Recent policy experience includes producing the technical report for the UK Government's Electronic balloting for industrial action: Knight review. The technical report constitutes an appendix of the review.