Publications

Journals

  • L. Paillat, C.-L. Ignat, D. Frey, M. Turuani and A. Ismail. “Discreet: distributed delivery service with context-aware cooperation”. In: Annals of Telecommunications 80(3-4), p. 357-374, 2025. DOI: 10.1007/s12243-024-01053-1. HAL: hal-04829916.
  • V. de Moura Netto, T. Cholez and C.-L. Ignat. “Active Sybil attack and efficient defense strategy in IPFS DHT”. In: Computer Networks 282, article 112277, 2026. DOI: 10.1016/j.comnet.2026.112277. HAL: hal-05424411.

Conferences

  • M. Rizk, S. Ibrahim and T. Lambert. “Altocumulus: Enabling efficient erasure coding in IPFS”. In: Proceedings of the 26th IEEE International Symposium on Cluster, Cloud and Internet Computing. CCGrid 2026. Sydney, Australia, may 2026, p. 540-549. DOI: 10.1109/CCGrid68966.2026.00064. HAL: hal-05577974.
  • V. de Moura Netto, T. Cholez and C.-L. Ignat. “Finding a Needle in a Haystack: Index Poisoning and Mitigation in IPFS DHT”. In: Proceedings of the International Symposium on Research in Attacks, Intrusions and Defenses. RAID 2026. Lancaster, United Kingdom, oct. 2026, p. 254-280. DOI: 10.1007/978-3-032-42929-2_10. HAL: hal-05856605.
  • V. de Moura Netto, T. Cholez and C.-L. Ignat. “Attaque Sybil active et stratégie de défense efficace appliquée à la DHT d’IPFS”. In: Rendez-vous de la Recherche et de l’Enseignement de la Sécurité des Systèmes d’Information. RESSI 2026. Clervaux, Luxembourg, may 2026. HAL: hal-05644727.
  • T. Cholez and C.-L. Ignat. “Sybil Attack Strikes Again: Denying Content Access in IPFS with a Single Computer”. In: Proceedings of the 19th International Conference on Availability, Reliability and Security. ARES 2024. Vienna, Austria, july 2024, p. 1-7. DOI: 10.1145/3664476.3664482. HAL: hal-04666290.
  • L. Paillat, C.-L. Ignat, D. Frey, M. Turuani and A. Ismail. “Design of an Efficient Distributed Delivery Service for Group Key Agreement Protocols”. In: Proceedings of the 16th International Symposium on Foundations & Practice of Security. FPS 2023. Bordeaux, France, dec. 2023, p. 408-423. DOI: 10.1007/978-3-031-57537-2_25. HAL: hal-04337821.
  • P.-A. Rault, C.-L. Ignat and O. Perrin. “Access control based on CRDTs for Collaborative Distributed Applications”. In: Proceedings of the 22nd IEEE International Conference on Trust, Security and Privacy in Computing and Communications. TrustCom 2023. Exeter, United Kingdom, nov. 2023, p. 1369-1376. DOI: 10.1109/TrustCom60117.2023.00187. HAL: hal-04224855.

Workshops

  • M. Rizk, S. Ibrahim and T. Lambert. “Asclepius: Duplication and Heterogeneity-Aware Data Repair in Erasure-Coded Storage Systems”. In: Proceedings of the 18th ACM Workshop on Hot Topics in Storage and File Systems. HotStorage 2026. Prague, Czech Republic, sept. 2026, p. 136-143. DOI: 10.1145/3837053.3837354.
  • S. Ibrahim and J. Darrous. “Erasure Coding Aware Block Placement for Data-Intensive Applications”. In: Proceedings of the 5th Workshop on Challenges and Opportunities of Efficient and Performant Storage Systems. CHEOPS 2025. Rotterdam, Netherlands, mar. 2025, p. 15-22. DOI: 10.1145/3719330.3721229. HAL: hal-05016741.
  • Q. Acher, C.-L. Ignat and S. Ibrahim. “Quantifying the Performance of Conflict-free Replicated Data Types in InterPlanetary File System”. In: Proceedings of the 4th International Workshop on Distributed Infrastructure for the Common Good. DICG 2023. Bologna, Italy, dec. 2023, p. 19-24. DOI: 10.1145/3631310.3633488. HAL: hal-04337761.

Posters

  • M. Rizk, S. Ibrahim and T. Lambert. “Quantifying the Performance of Erasure Codes in P2P Storage Systems (poster)”. In: Proceedings of the 36th International Conference on Scientific and Statistical Database Management. SSDBM 2024. Rennes, France, july 2024. HAL: hal-04857465.

Dissemination

  • Co-organisation by C.-L. Ignat of a session of Inria’s Annual Scientific Review on infrastructures for data management and inference in the context of AI (nov. 2026).
  • Keynote by D. Frey and C.-L. Ignat at the DARE 2026 ACM Europe Summer School on Distributed and Replicated Environments, Milan, Italy (sept. 2026).
  • Participation of Inria and Hivenet in the Trans Numériques 2026 summit of the France 2030 research programmes, Rennes, France (feb. 2026).
  • G. Oster and C.-L. Ignat. “Travailler ensemble à distance : solutions et défis des systèmes collaboratifs distribués”. Talk at the Rendez-vous de l’informatique du Programme National de Formation 2024-2025 (Ministère de l’Éducation Nationale, de l’Enseignement Supérieur et de la Recherche) and the NSI–SNT day. Nancy, France, apr. 2025. HAL: hal-05170265.
  • Participation of Inria and Hivenet in the Synergy Day of the PEPR Cloud (dec. 2024).
  • C.-L. Ignat. “Large-scale trustworthy distributed collaborative systems: challenges and prospective solutions” (keynote). In: Informatique des Organisations et Systèmes d’Information et de Décision. INFORSID 2024. Nancy, France, may 2024. HAL: hal-04595294.
  • Presentation of Alvearium by C.-L. Ignat to the Inria Scientific Council (dec. 2023).
  • Talks at the Per3S workshop (Performance and Scalability of Storage Systems), Paris:
    • Per3S 2023 (may 2023): A. Ismail (Hivenet), T. Lambert, Q. Acher and L. Paillat.
    • Per3S 2024 (may 2024): M. Rizk.
    • Per3S 2025 (may 2025): A. Dobrila (Hivenet).