, since January 2025.
My research interests include reverse engineering of microarchitectures, and security.
I completed my PhD at ENS Paris and IRISA/Inria in January 2023 with a thesis entitled
- clflush-based Attacks on Modern Cloud Servers
G. Didier, A. Lucas, J. Quirk, and T. Rokicki
ESORICS 2026-31st European Symposium on Research in Computer Security, 2026
[pdf] [bib]@inproceedings{didier2026clflush,
title = {clflush-based Attacks on Modern Cloud Servers},
author = {Didier, Guillaume and Lucas, Augustin and Quirk, Jasper and Rokicki, Thomas},
booktitle = {ESORICS 2026-31st European Symposium on Research in Computer Security},
pdf = {https://hal.science/hal-05668056v1/file/clflush-based_Attacks_on_Modern_Cloud_Servers.pdf},
url = {https://hal.science/hal-05668056},
year = {2026}
}
- WiP: Flush-based Cache Attacks on Modern/Multi-Socket x86 Systems
G. Didier, A. Lucas, and T. Rokicki
Proceedings of the Microarchitecture Security Conference, 2026
[pdf] [bib]@inproceedings{didier2026wip,
title = {{WiP}: Flush-based Cache Attacks on Modern/Multi-Socket x86 Systems},
author = {Didier, Guillaume and Lucas, Augustin and Rokicki, Thomas},
booktitle = {Proceedings of the Microarchitecture Security Conference},
pdf = {https://incs.ub.rub.de/index.php/uASC/article/view/12715/12388},
url = {https://incs.ub.rub.de/index.php/uASC/article/view/12715},
year = {2026}
}
- Hardware-Software Defense Idea: Data-flow Assertion Instructions
G. Didier
HS3 2026 - 2nd Workshop on Hardware-Supported Software Security, 2026
[pdf] [bib]@inproceedings{Didier2026HS3,
title = {{Hardware-Software Defense Idea: Data-flow Assertion Instructions}},
author = {Didier, Guillaume},
booktitle = {{HS3 2026 - 2nd Workshop on Hardware-Supported Software Security}},
keyword = {Hardware-Software co-design; Transient Execution Attacks; Micro-architectural Security},
url = {https://hal.science/hal-05715234v1},
year = {2026}
}
- Cache Attacks in Modern/Multi-Socket x86 Systems (Work in Progress)
G. Didier, A. Lucas, and T. Rokicki
HS3 2025 - 1st Workshop on Hardware-Supported Software Security, 2025
[pdf] [pdf slides] [bib]@inproceedings{didier:hal-05249476,
title = {{Cache Attacks in Modern/Multi-Socket x86 Systems (Work in Progress)}},
author = {Didier, Guillaume and Lucas, Augustin and Rokicki, Thomas},
booktitle = {{HS3 2025 - 1st Workshop on Hardware-Supported Software Security}},
hal_id = {hal-05249476},
hal_version = {v1},
keyword = {Flush+Flush ; Flush+Reload ; Microarchitectural attack ; NUMA ; Cache Side Channel ; Cache Side Channel NUMA Microarchitectural attack},
pdf = {https://hal.science/hal-05249476v1/file/2025_09_11_Cache_Attacks_in_Modern_x86_systems_WiP_DIDIER_LUCAS_ROKICKI_Camera_Ready.pdf},
url = {https://hal.science/hal-05249476},
year = {2025}
}
- Characterizing Prefetchers using CacheObserver
G. Didier, C. Maurice, A. Geimer, and W. Ghandour
2022 IEEE 34th International Symposium on Computer Architecture and High Performance Computing (SBAC-PAD), Bordeaux, France, November 2-5, 2022, 2022
[doi] [bib]@inproceedings{DidierMGG22,
title = {Characterizing Prefetchers using CacheObserver},
author = {Didier, Guillaume and Maurice, Cl{{\'e}}mentine and Geimer, Antoine and Ghandour, Walid J.},
booktitle = {2022 {IEEE} 34th International Symposium on Computer Architecture and High Performance Computing (SBAC-PAD), Bordeaux, France, November 2-5, 2022},
doi = {10.1109/SBAC-PAD55451.2022.00028},
publisher = {{IEEE}},
url = {https://doi.org/10.1109/SBAC-PAD55451.2022.00028},
year = {2022}
}
- Calibration Done Right: Noiseless Flush+Flush Attacks
G. Didier and C. Maurice
Detection of Intrusions and Malware, and Vulnerability Assessment - 18th International Conference, DIMVA 2021, Virtual Event, July 14-16, 2021, Proceedings, 2021
[doi] [bib]@inproceedings{DidierM21,
title = {Calibration Done Right: Noiseless Flush+Flush Attacks},
author = {Didier, Guillaume and Maurice, Cl{{\'e}}mentine},
booktitle = {Detection of Intrusions and Malware, and Vulnerability Assessment - 18th International Conference, {DIMVA} 2021, Virtual Event, July 14-16, 2021, Proceedings},
doi = {10.1007/978-3-030-80825-9\_14},
editor = {Bilge, Leyla and Cavallaro, Lorenzo and Pellegrino, Giancarlo and Neves, Nuno},
pages = {278--298},
publisher = {Springer},
series = {Lecture Notes in Computer Science},
url = {https://doi.org/10.1007/978-3-030-80825-9\_14},
year = {2021}
}
