Matthieu Bettinger UCLouvainICTEAM


I am currently a senior researcher in the ICTEAM’s Cloud and Large Scale computing group at UCLouvain in Belgium, led by Prof. Etienne Rivière. I defended my PhD on collusion-resilience in decentralized marketplace mechanisms in 2025 at INSA Lyon, France, under the supervision of Dr. Sonia Ben Mokhtar, as part of the joint laboratory RedChainLab, between the LIRIS-DRIM and the French startup iExec. Before that, I obtained a Dipl.Ing-M.Sc. double-degree in Computer Science in 2021, between INSA Lyon in France and the Universität Passau in Germany.

orcID — Google Scholar — GitHub — LinkedIn


My work focuses on the resilience, reliability, and scalability of distributed and decentralized protocols, in particular, based on blockchains and Trusted Execution Environments (TEEs). For example, my past contributions tackle TEE trusted time and remote attestation, search and marketmaking in decentralized marketplaces, as well as blockchain e-voting.

Professional experience

04/2026-03/2028 • Postddoctoral researcher at ICTEAM–UCLouvain, Belgium
07/2025-03/2026 • Postdoctoral researcher at LIRIS–ENTPE, France
01/2022-06/2025 • PhD student at LIRIS–INSA Lyon, France

Studies

01/2022-06/2025 • Ph.D. in Computer Science from INSA Lyon, France
04/2021-12/2021 • M.Sc. in Computer Science from Universität Passau, Germany
09/2016-12/2021 • Dipl.Ing. in Computer Science from INSA Lyon, France

Recent publications

TriHaRd: Higher Resilience for TEE Trusted Time
Matthieu Bettinger, Sonia Ben Mokhtar, Pascal Felber, Etienne Rivière, Valerio Schiavoni, Anthony Simonet-Boulogne
2026 45th IEEE International Conference on Computer Communications (INFOCOM ‘26), 18 May 2026, Tokyo (Japan), (accepted for publication).
HAL:hal-05411540 arXiv:2512.10732 Source code

An Open-source Implementation and Security Analysis of Triad’s TEE Trusted Time Protocol
Matthieu Bettinger, Sonia Ben Mokhtar, Anthony Simonet-Boulogne
Proceedings of the 2025 55th Annual IEEE/IFIP International Conference on Dependable Systems and Networks - Supplemental Volume (DSN-S ‘25), 23 Jun 2025, Naples (Italie), pp. 133-139.
DOI:10.1109/DSN-S65789.2025.00053 HAL:hal-05190200 arXiv:2507.20851 Source code

COoL-TEE: Client-TEE Collaboration for Resilient Distributed Search
Matthieu Bettinger, Etienne Rivière, Sonia Ben Mokhtar, Anthony Simonet-Boulogne
2025 25th IEEE International Symposium on Cluster, Cloud and Internet Computing (CCGRID ‘25), 19 May 2025, Tromsø (Norvège), pp. 353-362.
DOI:10.1109/CCGRID64434.2025.00041 HAL:hal-05000578 arXiv:2503.19063 Source code

(Details and full list in the Publications tab)

Projects

  • RedChainLab (04/2021–06/2025) — Resilience and efficiency of decentralized marketplaces based on blockchain — LIRIS-DRIM and iExec (as MSc and PhD student)
  • DSVD-SPSE (07/2025–06/2026) — Cardiac anomaly detection in drivers — LIRIS-DRIM, in collaboration with the CREATIS laboratory, the Hospices Civils of Lyon, and Renault Group (as postdoctoral researcher)
  • SCEAL (04/2026–03/2028) — Resilience and accessibility of blockchain smart contracts — ICTEAM–UCLouvain, Belgium, in collaboration with U. Neuchâtel in Switzerland and UAIC in Romania (as postdoctoral researcher)

Recent supervised projects

2026 • Co-supervised with Dr. Sonia Ben Mokhtar (ongoing):

  • Aurelio Salvati (M2 U. Naples Federico II, Italy): Unsupervised anomaly detection in electrocardiograms using federated learning
  • Mathis Morais (M2 INSA Lyon, France – U. Passau, Germany): Evaluation of zero-knowledge proof, homomorphic encryption, and GPU-TEE protocols for machine learning

2024 • Co-supervised with Dr. Sonia Ben Mokhtar and Dr. Anthony Simonet-Boulogne:

  • Jean Acker (M2 ENSTA Paris, France): Analysis of Intel SGX trusted time mechanisms
  • Henry Mont (M1 INSA Lyon, France): Reliability of decentralized cloud computing marketmaking

(Details and full list in the Supervision tab)

Service