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• • Séminaire

  • SoSysec

  Automated verification of privacy-type properties for security protocols

  • 16 mars 2018

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

  Orateur : Ivan Gazeau (LORIA, Inria Nancy)

  The applied pi-calculus is a powerful framework to model protocols and to define security properties. In this symbolic model, it is possible to verify automatically complex security properties such as strong secrecy, anonymity and unlinkability properties which are based on equivalence of processes.In this talk, we will see an overview of a verification method used by a tool, Akiss. The tool is[…]

• • Séminaire

  • SoSysec

  A Compositional and Complete approach to Verifying Privacy Properties using the Applied Pi-calculus

  • 08 février 2019

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

  Orateur : Ross Horne (University of Luxembourg)

  The pi-calculus was introduced for verifying cryptographic protocols by Abadi and Fournet in 2001. They proposed an equivalence technique, called bisimilarity, useful for verify privacy properties. It is widely acknowledged (cf. Paige and Tarjan 1987), that bisimilarity is more efficient to check than trace equivalence; however, surprisingly, tools based on the applied pi-calculus typically still[…]

• • Séminaire

  • SoSysec

  Built on sand: on the security of Collaborative Machine Learning

  • 25 mars 2022

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

  Orateur : Dario Pasquini (EPFL)

  This talk is about inaccurate assumptions, unrealistic trust models, and flawed methodologies affecting current collaborative machine learning techniques. In the presentation, we cover different security issues concerning both emerging approaches and well-established solutions in privacy-preserving collaborative machine learning. We start by discussing the inherent insecurity of Split Learning and[…]

• • Séminaire

  • SoSysec

  Intriguing Properties of Adversarial ML Attacks in the Problem Space

  • 19 juin 2020

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

  Orateur : Fabio Pierazzi (King’s College London)

  Recent research efforts on adversarial ML have investigated problem-space attacks, focusing on the generation of real evasive objects in domains where, unlike images, there is no clear inverse mapping to the feature space (e.g., software). However, the design, comparison, and real-world implications of problem-space attacks remain underexplored. In this talk, I will present two major contributions[…]

• • Séminaire

  • SoSysec

  Not so AdHoc testing: formal methods in the standardization of the EDHOC protocol

  • 16 décembre 2022

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

  Orateur : Charlie Jacomme (Inria Paris)

  We believe that formal methods in security should be leveraged in all the standardisation’s of security protocols in order to strengthen their guarantees. To be effective, such analyses should be:* maintainable: the security analysis should be performed on every step of the way, i.e. each iteration of the draft;* pessimistic: all possible threat models, notably all sort of compromise should be[…]

• • Séminaire

  • SoSysec

  Ransomware Detection Using Markov Chain Models Over File Headers

  • 26 novembre 2021

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

  Orateur : David Lubicz (DGA-MI)

  In this paper, a new approach for the detection of ransomware based on the runtime analysis of their behaviour is presented. The main idea is to get samples by using a mini-filter to intercept write requests, then decide if a sample corresponds to a benign or a malicious write request. To do so, in a learning phase, statistical models of structured file headers are built using Markov chains. Then[…]