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684 results

• • Seminar

  • SoSysec

  Model Stealing Attacks Against Inductive Graph Neural Networks

  • February 18, 2022

  • Inria Center of the University of Rennes - - Room TBD

  Speaker : Yufei Han (INRIA)

  Many real-world data come in the form of graphs. Graph neural networks (GNNs), a new family of machine learning (ML) models, have been proposed to fully leverage graph data to build powerful applications. In particular, the inductive GNNs, which can generalize to unseen data, become mainstream in this direction. Machine learning models have shown great potential in various tasks and have been[…]

• • Seminar

  • SoSysec

  Les cyberopérations: entre technique et droit international. Attribution, preuve et responsabilité.

  • April 02, 2021

  • Inria Center of the University of Rennes - - Room TBD

  Speaker : Anne-Thida Norodom (Professeur de droit public, Université de Paris)

  L’objet de cette intervention est de montrer à quel point le juridique est dépendant du technique lorsqu’il s’agit de réguler les cyberopérations. L’approche choisie sera celle du droit international public, c’est-à-dire du droit applicable entre Etats. Alors qu’il existe un consensus au niveau international sur l’applicabilité du droit international dans le domaine numérique, les négociations en[…]

• • Seminar

  • SoSysec

  Where ML Security Is Broken and How to Fix It

  • February 03, 2023

  • Inria Center of the University of Rennes - - Room TBD

  Speaker : Maura Pintor (PRA Lab, University of Cagliari)

  To understand the sensitivity under attacks and to develop defense mechanisms, machine-learning model designers craft worst-case adversarial perturbations with gradient-descent optimization algorithms against the model under evaluation. However, many of the proposed defenses have been shown to provide a false sense of robustness due to failures of the attacks, rather than actual improvements in[…]

• • Seminar

  • SoSysec

  Intrusion Detection Systems over an Encrypted Traffic: Problem and Solutions

  • December 06, 2019

  • Inria Center of the University of Rennes - - Room TBD

  Speaker : Sébastien Canard (Orange)

  Privacy and data confidentiality are today at the heart of many discussions. But such data protection should not be done at the detriment of other security aspects. In the context of network traffic, intrusion detection system becomes in particular totally blind when the traffic is encrypted, making clients again vulnerable to known threats and attacks. Reconciling security and privacy is then one[…]

• • Seminar

  • SoSysec

  Reasoning over leaks of information for Access Control of Databases

  • October 13, 2022

  • Inria Center of the University of Rennes - - Room TBD

  Speaker : Pierre Bourhis (CNRS, CRISTAL)

  Controlling the access of data in Database management systems is a classical problem and it has been solved through different mechanisms. One of the most common mechanism implemented in most Database management systems is the mechanism of views, i.e defining the accessible data of a user as the result of a query. This mechanism is also used in principle in other systems such as in social networks.[…]

• • Seminar

  • SoSysec

  Search-Based Local Black-Box Deobfuscation: Understand, Improve and Mitigate

  • February 25, 2022

  • Inria Center of the University of Rennes - - Room TBD

  Speaker : Grégoire Menguy (CEA LIST)

  Code obfuscation aims at protecting Intellectual Property and other secrets embedded into software from being retrieved. Recent works leverage advances in artificial intelligence (AI) with the hope of getting blackbox deobfuscators completely immune to standard (whitebox) protection mechanisms. While promising, this new field of AI-based, and more specifically search-based blackbox deobfuscation,[…]