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634 résultats
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Séminaire
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SoSysec
The PINED-RQ Family: Differentially Private Indexes for Range Query Processing in Clouds
Orateur : Tristan Allard (IRISA, Université de Rennes 1)
Performing non- aggregate range queries on cloud stored data, while achieving both privacy and efficiency is a challenging problem. With the PINED-RQ family of techniques, we propose constructing a differentially private index to an outsourced encrypted dataset. Efficiency is enabled by using a cleartext index structure to perform range queries. Security relies on both differential privacy (of the[…] -
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Séminaire
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SoSysec
Differentially Private Linear Sketches: Efficient Implementations and Applications
Orateur : Fuheng Zhao (University of California Santa Barbara)
Linear sketches have been widely adopted to process fast data streams, and they can be used to accurately answer frequency estimation, approximate top K items, and summarize data distributions. When data are sensitive, it is desirable to provide privacy guarantees for linear sketches to preserve private information while delivering useful results with theoretical bounds. To address these[…] -
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SoSysec
Security and privacy in personal data management systems
Orateur : Nicolas Anciaux (INRIA)
Personal Data Management Systems (called PDMS) provide individuals with a hardware and/or software solution to manage their data under control. From a data management and security/privacy perspective, the issues involved are complex and differ significantly from the traditional database setting. The emergence of trusted execution environments (such as Intel SGX) could be a game changer. This[…] -
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Séminaire
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SoSysec
Contemporary Issues in Digital Forensics
Orateur : Ben Martini (University of South Australia)
The discipline of digital forensics, or as it was then known ‘forensic computing’, began with a focus on retrieving admissible evidence from computer systems (typically personal computers). However, with the increased pervasiveness of connected digital technologies in the last 20 years, a wide variety of new and complex sources of digital evidence have emerged. This has presented a range of[…] -
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SoSysec
Programmable Network Security – Challenges and Opportunities
Orateur : Sandra Scott-Hayward (Queen’s University Belfast)
Society’s dependence on communication networks for all aspects of day-to-day living; business, education, entertainment etc. makes “the network” a very attractive target for malicious attack, which cyber criminals are only too eager to exploit, attempting to limit or block access to essential services (e.g., healthcare, banking, critical infrastructure etc.), disrupting our daily lives and causing[…] -
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Séminaire
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SoSysec
Les cyber opérations, entre opportunités stratégiques et contraintes opérationnelles
Orateur : Stéphane Taillat (Académie Militaire de Saint Cyr-Coëtquidan)
Le recours aux opérations numériques et au cyberespace s’est généralisé dans la gestion des crises et des conflits internationaux. Pour autant, aucune des cyber opérations étatiques ou prêtées à des États n’ont débouché sur des conflits armés ou sur une escalade significative des tensions. A ce titre, cette conférence cherche à s’interroger sur l’utilité stratégique des opérations numériques et du[…] -