Description
Network intrusion detection systems (NIDS) observe network traffic and aim to pinpoint intrusions, i.e. effective threats on the integrity, availability or confidentiality of services and data provided by this network. There are two types of NIDS:1) signature-based intrusion detection systems that identify known intrusions by referring to an existing knowledge base, and2) anomaly-based intrusion detection systems (AIDS) that detect intrusions based on deviations from a model of normal network traffic, usually learnt through machine learning techniques.While AIDS have the advantage to not necessitate the manual creation of signatures, deploying AIDS in networks is challenging in practice.First, collecting representative network data and properly labelling it is complex and costly. This data is also highly unbalanced, as attacks are rare events. Finally, a learned AIDS is likely to show a drop in detection rates due to differences between the training context and the inference context.This presentation will discuss the results of Nicolas Sourbier’s PhD thesis that has studied how genetic programming and Tangled Program Graphs (TPGs) machine learning can help overcoming the challenges of the network AIDS.
Prochains exposés
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Vers l’émergence d’un droit européen pour la Blockchain : Une approche sous l’angle de la Privacy et de l’encadrement des crypto-actifs
Orateur : Damien Franchi - Univ Rennes, IODE
La Blockchain, technologie derrière Bitcoin, fait l’objet d’un encadrement juridique de plusen plus important, en particulier de la part de l’Union européenne. Curieusement, le mot« Blockchain » n’apparaît pas dans les textes l’encadrant. Les expressions « technologie deregistres distribués » (Distributed ledger technology, DLT), ou, parfois, « registreélectronique » lui sont plutôt privilégiées.[…]-
SoSysec
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Law
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Blockchain and digital currencies: between European regulation and technological challenges
Orateur : Loïc Miller - CentraleSupélec
As the European Union develops a legal framework for crypto-assets and data protection, the technological question underlying the emergence of a genuine digital currency remains open. Blockchain today stands as an interdisciplinary field of study at the crossroads of computer science, economics, and law. This presentation will place the ongoing regulatory framework in perspective with the[…]-
SoSysec
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Distributed systems
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Hardware-Software Co-Designs for Microarchitectural Security
Orateur : Lesly-Ann Daniel - EURECOM
Microarchitectural optimizations, such as caches and speculative out-of-order execution, are essential for achieving high performance. However, these same mechanisms also open the door to attacks that can undermine software-enforced security policies. The current gold standard for defending against such attacks is the constant-time programming discipline, which prohibits secret-dependent control[…]-
SoSysec
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Hardware/software co-design
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Micro-architectural vulnerabilities
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