Romaric LUDINARD

Romaric LUDINARD

Enseignant-chercheur en informatique, Responsable de la filière Statistique et ingénierie des données

Ensai - Campus de Ker Lann - Rue Blaise Pascal - BP 37203
35172 Bruz Cedex
FRANCE

Tél. : +33 (0)2 99 05 32 59
Fax : +33 (0)2 99 05 32 05
  • Home/
  • Research Interests/
  • Past activities/
  • Publications/
  • Committees/
  • Teaching/
  • Talks/

Short bio/

I am currently associate professor at ENSAI, the national school for Statistics and Information Analysis, where I am managing the Data scientist specialization, until August 2017, which corresponds to the end of my current contract. Before that, I was research and teaching assistant at University of Rennes during one year.

My research mainly focuses on models, safety and performance of distributed systems. I felt in these fields just after having received my engineering degree in computer science from University of Rennes 1 in 2006. At this time, I have started working on fault tolerance in the specific field of intrusion detection systems in the context of DADDi project. Then, I worked on  byzantine fault tolerance in large scale distributed systems in the context of P2PIm@ges project. In 2010, I joined Supelec for one year to work on anomaly based intrusion detection systems in the context of DALI project.

In 2011, I was funded by Inria and Technicolor to prepare my phD on fault characterization in large scale networks. I am currently focusing my research on Blockchain protocols and their guarantees.

Research interests/

  • Distributed algorithms
  • Large-scale systems
  • Byzantine and malicious behaviours
  • Performance evaluation
  • Resilience and dependability evaluation
  • Quantitative assessment of system dependability aspects

Former projects and research activities/

  • 2016 --- Projet Exploratoire Premier Soutien "Sécurité Informatique et des Systèmes Cyberphysiques" (PEPS SISC) CNRS BIPs
  • Since 09/2015 --- Associate Professor at Ensai, Head of Data Scientist Specialization
  • 02/2015 - 08/2015 --- PostDoc at Research Center for Cyber Intelligence and Information Security, Université La Sapienza, Rome
  • 09/2014 - 08/2014 --- Researching and teaching assistant at Université Rennes 1 in CIDRe team
  • 05/2011 - 08/2014 --- PhD Student in Dionysos team
  • 04/2010 - 04/2011 --- Research engineer in Dali project
  • 11/2007 - 03/2010 --- Research engineer in P2PIm@ges project
  • 10/2006 - 09/2007 --- Research engineer in DADDi project
  • 2006 --- Internship at France Télécom R & D--- Implementation and simulation of p2p protocols
  • 2005 --- Internship at Inria--- Implementation and simulation of SAM : self-* atomic memory for P2P systems

Publications list/

Journals :

  • Performance Evaluation of a Peer-to-peer Backup System using Buffering at the Edge pdf
    Computer Communications, October 2014
    with A. Kermarrec, E. Le Merrer, N. Le Scouarnec, P. Maillé, G. Straub and A. Van Kempen
  • An Invariant-based Approach for Detecting Attacks against Data in Web Applications pdf
    International Journal of Secure Software Engineering, January 2014
    with E. Totel, F. Tronel, V. Nicomette, M. Kaaniche, E. Alata, R. Akrout and Y. Bachy
  • Markov Chains Competing for Transitions: Application to Large-Scale Distributed Systems pdf
    Methodology and Computing in Applied Probability, June 2013
    with E. Anceaume, F. Castella and B. Sericola
  • Performance evaluation of large-scale dynamic systems pdf
    ACM SIGMETRICS Performance Evaluation Review, 2012
    with E. Anceaume and B. Sericola
  • Dependability Evaluation of Cluster-Based Distributed Systems pdf
    International Journal of Foundations of Computer Science, August 2011
    with E. Anceaume, F. Brasileiro, B. Sericola and F. Tronel

Regular papers :

  • Handling Bitcoin Conflict through a Glimpse of Structure
    Proceedings of the 32nd ACM Symposium on Applied Computing (SAC'17), 2017
    with T. Lajoie-Mazenc and E. Anceaume
  • Safety Analysis of Bitcoin Improvement Proposals pdf
    Proceedings of the 15th IEEE Symposium on Network Computing and Applications (NCA 2016)
    with E. Anceaume, T. Lajoie-Mazenc and B. Sericola
  • Anomaly Characterization in Large Scale Networks pdf
    Proceedings of the 44th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN 2014)
    with E. Anceaume, Y. Busnel, J.L. Marchand, E. Le Merrer and B. Sericola
  • FixMe: A Self-organizing Isolated Anomaly Detection Architecture for Large Scale Distributed Systems pdf
    Proceedings of the 16th International Conference On Principles Of DIstributed Systems (OPODIS 2012)
    with E. Anceaume, E. Le Merrer, B. Sericola and G. Straub
  • Detecting Attacks against Data in Web Applications pdf
    Proceedings of the 7th International Conference on Risks and Security of Internet and Systems (CRISIS 2012)
    with E. Totel, F. Tronel, V. Nicomette, M. Kaaniche, E. Alata, R. Akrout and Y. Bachy
  • Modeling and Evaluating Targeted Attacks in Large Scale Dynamic Systems pdf
    Proceedings of the 41st Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN 2011) - The Performance and Dependability Symposium (PDS)
    with E. Anceaume and B. Sericola and F. Tronel
  • Analytic Study of the Impact of Churn in Cluster-Based Structured P2P Overlays pdf
    Proceedings of the IEEE International Conference on Communications (ICC 2010)
    with E. Anceaume and B. Sericola
  • PeerCube: An Hypercube-based P2P overlay robust against collusion and churn pdf
    Proceedings of the IEEE International Conference on Self-Adaptive and Self-Organizing Systems (SASO 2008)
    with E. Anceaume and F. Brasileiro and A. Ravoaja

Thesis :

    Caractérisation locale de fautes dans les systèmes large échelle pdf defense (french)

 

Briefs :

  • Relying on Consensus does not Make Bitcoin Safer pdf
    Fast Abstract in the 46th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN 2016)
    with E. Anceaume and B. Sericola
  • Anomaly Filtering in Large Scale Systems pdf
    32nd International Symposium on Reliable Distributed Systems (SRDS 2013)
  • Brief Announcement: Induced Churn to Face Adversarial Behavior in Peer-to-Peer Systems pdf
    Proceedings of the 11th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS 2009)
    with E. Anceaume and B. Sericola and F. Tronel and F. Brasileiro

Workshops :

  • A Self-organising Isolated Anomaly Detection Architecture for Large Scale Systems pdf
    Nem Summit 2013
    with E. Anceaume, E. Le Merrer, B. Sericola and G. Straub
  • Analytical Study of Adversarial Strategies in Cluster-based Overlays pdf
    Proceedings of the 2nd International Workshop on Reliability, Availability, and Security (WRAS) in conjunction with the International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT) 2009
    with E. Anceaume and B. Sericola and F. Tronel and F. Brasileiro

National conferences :

  • L'empire romain ne doit pas être géré comme une petite île grecque pdf
    Actes des 18èmes Rencontres Francophones pour les Aspects Algorithmiques des Télécommunications (AlgoTel 2016)
    with E. Anceaume, and B. Sericola
  • Anomaly Characterization Problems pdf
    Actes des 16èmes Rencontres Francophones pour les Aspects Algorithmiques des Télécommunications (AlgoTel 2014)
    with E. Anceaume, Y. Busnel, E. Le Merrer, J. L. Marchand, B. Sericola and G. Straub
  • FixMe : détection répartie de défaillances isolées pdf
    Actes des 15èmes Rencontres Francophones pour les Aspects Algorithmiques des Télécommunications (AlgoTel 2013)
    with E. Anceaume, E. Le Merrer, B. Sericola and G. Straub
  • RRABIDS, un système de détection d’intrusion pour les applications Ruby on Rails pdf
    Actes du Symposium sur la sécurité des technologies de l'information et des communications (SSTIC 2011)
    with L. Le Hennaff and É. Totel
  • Modélisation et Evaluation des Attaques Ciblées dans un Overlay Structuré pdf
    Actes du Colloque Francophone sur l'Ingenierie des Protocoles (CFIP 2011)
    with E. Anceaume, B. Sericola and F. Tronel

Patents

  • Network system and method for checking plausibility of a value returned by a device
    Patent N° 14306449.1 of the European Patent Office, September 2014.
    with E. Le Merrer, N. Le Scouarnec
  • Method for isolated anomaly detection in large-scale audio/video/data processing systems.
    Patent N° 13306029.3 of the European Patent Office, July 2013.
    with E. Le Merrer, B. Sericola, G. Straub
  • Method for isolated anomaly detection in large-scale data processing systems.
    Patent N° 12306237.4 of the European Patent Office, October 2012.
    with E. Le Merrer, B. Sericola, G. Straub

Committees/

  • TPC at SSTIC'12, '13, '14
  • Reviewer at Elsevier Perforance Evaluation
  • Subreviewer at NOTERE'12, PODC'15, SRDS'15, TRUSTCOM'15, AlgoTel'15, SRDS'16, NCA'16

Conference organization/

Teaching/

 2016 - 2017 ENSAI, 3è année, Systèmes distribués, 21h CM
ENSAI, 1ère année, Programmation orientée objet, 10,5h CM
ENSAI, 1ère année, Algorithmique et programmation, 4h30 TD / 19h30 TP

ENSAI, 1ère année, Atelier de modélisation et programmation objet, 18h TP

 2015 - 2016 ENSAI, 3è année, Systèmes distribués, 21h CM
ENSAI, Msc Big Data, Parallelized systems, 18h CM
ENSAI, 1ère année, Algorithmique et programmation, 4h30 TD / 19h30 TP
ENSAI, 1ère année, Atelier de modélisation et programmation objet, 18h TP
 2014 - 2015 Université Rennes 1, Licence 1, Algorithmique fonctionnelle, 20h TD / 20h TP
Université Rennes 1, Licence 2, Mathématiques pour l'informatique, 36h TD
Université Rennes 1 / ISTIC, Licence 3, Algorithmique des graphes, 20h TD
Université Rennes 1 / ISTIC, Licence 3, Algorithmique et programmation, 34h Cours-TD, 22h TP
Université Rennes 1 / ISTIC, Master 1, Atelier de conception objet, 56h Projet
Université Rennes 1, Licence 1, Bureautique et préparation au C2I, 20h TP
Université Rennes 1 / ISTIC, Mises à niveau en informatique, 12h TP
 2013 - 2014 ENSAI, 1ère année, Programmation orientée objet, 27h TP

Talks

  • January'17 : Presentation of my work on Bitcoin and safety analysis of recent improvement proposals at RESCOM days
  • November'16 : Invited speaker at Blockchains day, organized by French Computer Science Society Talk
  • October'16 : Seminar on Bitcoin at Université La Sapienza, Rome
  • June 2016 : Presentation of my work on Blockchain improvement proposals and safety assessment at DSN'16
  • May 2016 : Presentation of my work on Blockchain improvement proposals and safety assessment at AlgoTel'16
  • June 2014 : Presentation of my work on fault characterization in large scale systems at DSN'14
  • May 2014 : Presentation of my work on fault characterization in large scale systems at AlgoTel'14
  • November 2013 : Presentation of my work on local fault characterization in large scale systems at Technicolor WOS 3
  • October 2013 : Presentation of my work on local fault characterization in large scale systems at SRDS'13
  • May 2013 : Presentation of my work application logic preserving DHT at AlgoTel'13
  • December 2012 : Presentation of my work application logic preserving DHT at Opodis'12
  • October 2012 : Presentation of my work on anomaly detection in web applications at CRISIS'12
  • June 2011 : Presentation of my work on anomaly detection in web applications at SSTIC'11
  • May 2011 : Presentation of my work on DHT resilience to eclipse attacks at CFIP'11
  • October 2008 : Presentation of my work on Byzantine tolerant DHT at SASO'08