80 résultats

  • Towards More Secure Large Language Models

    • 12 juin 2026 (11:00 - 12:00)

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

    Orateur : 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

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

    • 05 juin 2026 (11:00 - 12:00)

    • Inria Center of the University of Rennes - Aurigny room

    Orateur : 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

  • Privacy-preserving collaboration for intrusion detection in distributed systems

    • 27 mars 2026 (11:00 - 12:00)

    • Inria Center of the University of Rennes - Room Markov

    Orateur : Léo Lavaur - Université du Luxembourg

    The emergence of Federated Learning (FL) has rekindled the interest in collaborative intrusion detection systems, which were previously limited by the risks of information disclosure associated with data sharing. But is it a good collaboration tool? Originally designed to train prediction models on distributed consumer data without compromising data confidentiality, its use as a collaborative[…]

    • SoSysec

    • Privacy

    • Intrusion detection

    • Distributed systems

  • The Quest for my Perfect MATE. Investigate MATE: Man-at-the-End attacker (followed by a hands-on application). 

    • 11 février 2026 (16:00 - 17:30)

    • Pôle Numérique Rennes Beaulieu (PNRB)

    Orateur : Mohamed Sabt, Etienne Nedjaï - Univ Rennes, IRISA

    Shannon sought security against an attacker with unlimited computational powers: if an information source conveys some information, then Shannon’s attacker will surely extract that information. Diffie and Hellman refined Shannon’s attacker model by taking into account the fact that the real attackers are computationally limited. This idea became one of the greatest new paradigms in computer[…]

  • Les jeux vidéo de l’écran au réel : enjeux juridiques et (géo)politiques au prisme de la cybersécurité

    • 11 février 2026 (14:00 - 15:30)

    • Pôle Numérique Rennes Beaulieu (PNRB)

    Orateur : Léandre Lebon, Sandrine Turgis - Univ Rennes, IODE

    Protection des droits d’auteur, lutte contre les techniques de triche, interactions avec la guerre et les conflits hybrides, enjeux de démocratie ... Sous l’angle de la cybersécurité les enjeux juridiques et (géo)politiques des jeux video sont nombreux. Cette présentation du groupe de travail sur les jeux video (GTJV) permettra d’alimenter la réflexion sur l’articulation entre jeux video et[…]

    • Law

  • The Design and Implementation of a Virtual Firmware Monitor

    • 30 janvier 2026 (11:00 - 12:00)

    • Inria Centre of the University of Rennes - Room Petri/Turing

    Orateur : Charly Castes - EPFL

    Low level software is often granted high privilege, yet this need not be the case. Although vendor firmware plays a critical role in the operation and management of the machine, most of its functionality does not require unfettered access to security critical software and data. In this paper we demonstrate that vendor firmware can be safely and efficiently deprivileged, decoupling its[…]

    • SoSysec

    • Compartmentalization

    • Operating system and virtualization

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