Publications

My research papers are divided into topics of interest.

Side-channel and Fault Injection Attacks

C. Shepherd, B. Semal, K. Markantonakis, Investigating Black-box Function Recognition Using Hardware Performance Counters, IEEE Transactions on Computers, IEEE, 2022. [View PDF]
C. Shepherd, B. Semal, J. Kalbantner, K. Markantonakis, A Side-channel Analysis of Sensor Multiplexing for Covert Channels and Application Fingerprinting on Mobile Devices, IEEE Transactions on Dependable and Secure Computing, 2023. [View PDF]
C. Shepherd, K. Markantonakis, N. van Heijningen, D. Aboulkassimi, C. Gaine, T. Heckmann, D. Naccache, Physical Fault Injection and Side-Channel Attacks on Mobile Devices: A Comprehensive Analysis, Computers & Security, Elsevier, 2021. [View PDF]

Trusted Execution Environments and Attestation

C. Shepherd, K. Markontonakis, G-A. Jaloyan, LIRA-V: Lightweight Remote Attestation for Constrained RISC-V Devices, IEEE Workshop on the Internet of Safe Things (SafeThings), in conjunction with IEEE Security & Privacy, IEEE, 2021.[View PDF]
C. Shepherd, Techniques for Establishing Trust in Remote Sensing Devices Using Trusted Execution Environments, Ph.D. Thesis, Royal Holloway, University of London, 2019. [View PDF]
C. Shepherd, R. N. Akram, K. Markantonakis, Remote Credential Management with Mutual Attestation for Trusted Execution Environments. In: O. Blazy and C. Yeun, eds. 12th IFIP Int’l Conference on Information Security Theory and Practice (WISTP ‘18), vol. 11469 of Lecture Notes in Computer Science, Springer, 2018. [View PDF]
C. Shepherd, R. N. Akram, K. Markantonakis, EmLog: Tamper-Resistant System Logging for Constrained Devices with TEEs. In: G. P. Hancke and E. Damiani, eds. 11th IFIP Int’l Conference on Information Security Theory and Practice (WISTP ‘17), vol. 10741 of Lecture Notes in Computer Science, Springer, 2017. [View PDF]
C. Shepherd, R. N. Akram, K. Markantonakis, Establishing Mutually Trusted Channels for Remote Sensing Devices with Trusted Execution Environments. In: 12th Int’l Conference on Availability, Reliability and Security (ARES ‘17), ACM, 2017. [View PDF]
C. Shepherd, R. N. Akram, K. Markantonakis, Towards Trusted Execution of Multi-modal Continuous Authentication Schemes. In: Proceedings of the 32nd Symposium on Applied Computing (ACM SAC ‘17), ACM, 2017. [View PDF]
C. Shepherd, G. Arfaoui, I. Gurulian, R. P. Lee, K. Markantonakis, R. N. Akram, D. Sauveron, E. Conchon, Secure and Trusted Execution: Past, Present and Future–A Critical Review in the Context of the Internet of Things and Cyber-Physical Systems. In: 15th IEEE Int’l Conference on Trust, Security and Privacy in Computing and Communications (TrustCom ‘16), IEEE, 2016. [View PDF]

Mobile and Internet of Things Security

I. Gurulian, C. Shepherd, K. Markantonakis, E. Frank, R. N. Akram, K. Mayes, On the Effectiveness of Ambient Sensing for Detecting NFC Relay Attacks. In: 16th IEEE Int’l Conference on Trust, Security and Privacy in Computing and Communications (TrustCom ‘17), IEEE, 2017. [View PDF]
(Invited Paper) I. Gurulian, K. Markantonakis, C. Shepherd, E. Frank, R. N. Akram, Proximity Assurances Based on Natural and Artificial Ambient Environments. In: P. Farshim and E. Simion, Eds. 10th Int’l Conference on Innovative Security Solutions for Information Technology and Communications (SECITC ‘17), vol. 10542 of Lecture Notes in Computer Science, Springer, 2017. [View PDF]
C. Shepherd, I. Gurulian, E. Frank, K. Markantonakis, R. N. Akram, K. Mayes, E. Panaousis, The Applicability of Ambient Sensors as Proximity Evidence for NFC Transactions. In: Mobile Security Technologies, IEEE Security & Privacy Workshops, IEEE, 2017. [View PDF]
P. Mainali and C. Shepherd, Privacy-Enhancing Fall Detection from Remote Sensor Data Using Multi-Party Computation, In: Proceedings of the 14th Int’l Conference on Availability, Reliability and Security (ARES ‘19), ACM, 2019. [View PDF]
P. Mainali, C. Shepherd, F. A. P. Petitcolas, Privacy-Enhancing Context Authentication from Location-Sensitive Data, In: Proceedings of the 14th Int’l Conference on Availability, Reliability and Security (ARES ‘19), ACM, 2019. [View PDF]
Y. Shen, C. Shepherd, C. M. Ahmed, S. Shen, X. Wu, W. Ke, S. Yu, Game-theoretic Analytics for Privacy Preservation in Internet of Things Networks: A Survey. Engineering Applications of Artificial Intelligence, Elsevier, 2024.
Y. Shen, C. Shepherd, C. M. Ahmed, S. Shen, S. Yu, SGD3QN: Joint Stochastic Games and Dueling Double Deep Q-networks for Defending Malware Propagation in Edge Intelligence-Enabled Internet of Things. IEEE Transactions on Information Forensics and Security, IEEE, 2024.
Y. Shen, C. Shepherd, C. M. Ahmed, S. Yu, T. Li, Comparative DQN-improved Algorithms for Stochastic Games-based Automated Edge Intelligence-enabled IoT Malware Spread-suppression Strategies. IEEE Internet of Things Journal, IEEE, 2024.

Other Work

(Best Paper Award) V. Vagal, K. Markantonakis, C. Shepherd, A New Approach to Complex Dynamic Geofencing for Unmanned Aerial Vehicles, Proceedings of the 40th AIAA/IEEE Digital Avionics Systems Conference (DASC), IEEE, 2021. [View PDF]
C. Shepherd, F. A. P. Petitcolas, R. N. Akram, K. Markantonakis, An Exploratory Analysis of the Security Risks of the Internet of Things in Finance. In: J. Lopez, S. Fischer-Hübner and C. Lambrinoudakis, Eds. 14th Int’l Conference on Trust, Security and Privacy in Digital Business (TrustBus ‘17), vol. 10042 of Lecture Notes in Computer Science, Springer, 2017. [View PDF]
R. Kirkham, C. Shepherd, T. Plotz, BlobSnake: Gamification of Feature Extraction for ‘Plug and Play’ Human Activity Recognition. In: Proceedings of the 2015 British HCI Conference, ACM, 2015. [View PDF]
F. Hao, D. Clarke, C. Shepherd, Verifiable Classroom Voting: Where Cryptography Meets Pedagogy. In: B. Christianson, J. Malcolm, F. Stajano, R. J. Anderson and J. Bonneau, Eds. Security Protocols XXI, vol. 8263 of Lecture Notes in Computer Science, Springer, 2013. [View PDF]