SoSySec Seminar

Presentation of the seminar

• Description

  Information systems and networks have become indispensable aids in our everyday lives. In addition to highly visible uses as mobile phones or personal computers, it is worth mentioning applications more subtle but equally important for economic activity such as cloud computing, industrial control systems, electrical networks. In fact, our society nurtures a growing dependence towards information systems which makes economic and sovereignty issues related to security increasingly important.

  At the same time, due to their increasing complexity, their ubiquity, and multiplicity of risks associated with malicious or fraudulent use, ensuring an acceptable level of security seems close to impossible. Many questions related to the control of the security of softwares and information systems are thus at the origin of an intense scientific activity. We can cite for example intrusion detection, vulnerability research, proof of protocols, static analysis, virtualization…

  From the interaction of all these themes, emerges a deep scientific domain that forms a point of contact between fundamental research and applications with a strong economic potential. Rennes metropolitan area is home to many talents in this field of research, both in academia and industry. This seminar aims to become a natural platform to gather, stimulate and promote Rennes security research and development community by confronting it to the best achievements of international research.

• Organizing committee

  • Tristan Allard (Université de Rennes)

  • Louis Rilling (DGA)

  • Nadia Derouault (Inria) - assistant

• Program committee

  The program committee is in charge of the organization and the program of the seminar.
  Its members are:

  • Tristan Allard (Université de Rennes)
  • Guillaume Doyen (IMT Atlantique)
  • Teddy Furon (Inria)
  • Guillaume Hiet (CentraleSupélec)
  • Joseph Lallemand (CNRS)
  • David Lubicz (DGA-MI)
  • Louis Rilling (DGA-MI)
  • Mohamed Sabt (Université de Rennes)
  • Sandrine Turgis (Université de Rennes)

Practical infos

• Date

  Every Friday at 11:00 a.m.
• Location

  Inria Center of the University of Rennes - Room TBD
  Locate on Google Maps
• Registration

  Go to registration form
• Suggest a presentation

  Go to suggestion form

Next sessions

• Opening Pandora's Box: White-Box Attacks on Microsoft's PhotoDNA Perceptual Hash Function

  • June 05, 2026 (11:00 - 12:00)

  • Inria Center of the University of Rennes - Aurigny room

  Speaker : Diane Leblanc-Albarel - KU Leuven

  PhotoDNA is a widely deployed perceptual hash function used for the detection of illicit content such as Child Sexual Abuse Material (CSAM). In this talk, I will present our paper introducing the first mathematical description of Alleged PhotoDNA, a function that reproduces the outputs of PhotoDNA. Our analysis reveals several structural weaknesses: the function is piece-wise linear and[…]

  • Cryptography

  • Privacy

• Towards More Secure Large Language Models

  • June 12, 2026 (11:00 - 12:00)

  • Inria Center of the University of Rennes - Petri/Turing room

  Speaker : Raouf Kerkouche - Inria Lille

  Large Language Models (LLMs) have achieved considerable success and are now widely used across multiple domains, highlighting their transformative impact on both technology and society. However, this widespread adoption also exposes LLMs to numerous security threats that can alter model behavior or degrade overall performance. To mitigate these threats, most research has focused on alignment[…]

  • Machine learning

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