Séminiare Telecom Réseaux
Séminaires Telecom & Réseaux
L'équipe Planete organise 3 séminaires scientifiques sur les Réseaux et Télécommunications, en marge de la soutenance de thèse de Stevens Leblond.
- Date : 29/04/2011
- Lieu : Inria Sophia Antipolis - Méditerranée, Amphithéâtre Morgenstern
- Intervenant(s) : Paul Francis (Max Planck Institute), Engin Kirda (Northeastern University), Pablo Rodriguez (Telefonica)
- Organisateur(s) : Inria - Equipe PLANETE
10 h à 11 h : Paul Francis, Research Director at MPI-SWS
Title: Privacy from Advertisers
Abstract: There has been recent progress made on private advertising systems that can operate with tracking, thus protecting the user from ad networks, aggregators, and behavioral targeting companies. But these systems do nothing to protect users' privacy from advertisers, which can target users on an increasing range of demographics and behaviors. In this talk, I will give an overview of recent work on private advertising systems, and describe techniques for protecting user privacy from advertisers while still allowing for effective targeting.
Bio: Paul Francis is a tenured faculty at the Max Planck Institute for Software Systems in Germany. Paul has held research positions at Cornell University, ACIRI, NTT Software Labs, Bellcore, and MITRE, and was Chief Scientist at two Silicon Valley startups. Paul's research centers around routing and addressing problems in the Internet and P2P networks. Paul's innovations include NAT, shared-tree multicast, the first P2P multicast system, the first DHT (as part of landmark routing), and Virtual Aggregation. Recently Paul has become interested in designing advertising systems that protect user privacy while allowing for effective targeting.
11 h à 12 h : Engin Kirda, Associate Professor at Northeastern University
Title: Reverse Social Engineering Attacks in Online Social Networks
Abstract: Social network sites are some of the largest and fastest growing online services today. Facebook, for example, has been ranked as the second most visited site on the Internet, and has been reporting growth rates as high as 3% per week. One of the key features of social networks is the support they provide for finding new friends. For example, social network sites may try to automatically identify which users know each other and make friendship recommendations.
Clearly, most social network sites are critical with respect to user's security and privacy due to the large amount of information available on them, as well as the very large user base. Previous research has shown that users of online social networks tend to exhibit a higher degree of trust in friend requests and messages sent by other users. Even though the problem of unsolicited messages in social networks (i.e., spam) has already been studied in detail, to date, reverse social engineering attacks in social networks have not received any attention. In a reverse social engineering attack, the attacker does not initiate contact with the victim. Rather, the victim is tricked into contacting the attacker herself. As a result, a high degree of trust is established between the victim and the attacker as the victim is the entity that established the relationship.
In this paper, we present the first user study on reverse social engineering attacks in social networks. That is, we discuss and show how attackers, in practice, can abuse some of the friend-finding features that online social networks provide with the aim of launching reverse social engineering attacks. Our results demonstrate that reverse social engineering attacks are feasible and effective in practice.
Bio: Engin Kirda is an associate professor at the Northeastern University in Boston. Before that, Engin has held research positions at Institute Eurecom in the French Riviera and the Technical University of Vienna where he co-founded the Secure Systems Lab that is now distributed over five institutions in Europe and US. Engin is interested in systems, software and network security (with focus on Web security, binary analysis, malware detection). Engin is language independent (with computers) and is part of the Shellphish hacking group that regularly participates at the Defcon Capture the Flag.
14 h à 15 h : Pablo Rodriguez, Research Director at Telefonica
Title: Scaling Online Social Networks
Abstract: The difficulty of scaling Online Social Networks (OSNs) has introduced new system design challenges that has often caused costly re-architecting for services like Twitter and Facebook. The complexity of interconnection of users in social networks has introduced new scalability challenges. Conventional vertical scaling by resorting to full replication can be a costly proposition. Horizontal scaling by partitioning and distributing data among multiples servers – e.g. using DHTs – can lead to costly inter-server communication. We have designed, implemented, and evaluated SPAR, a social partitioning and replication middle-ware that transparently leverages the social graph structure to achieve data locality while minimizing replication. SPAR guarantees that for all users in an OSN, their direct neighbor’s data is co-located in the same server. The gains from this approach are multi-fold: application developers can assume local semantics, i.e., develop as they would for a single server; scalability is achieved by adding commodity servers with low memory and network I/O requirements; and redundancy is achieved at a fraction of the cost.
Bio: Pablo is the Research Director at Telefonica R&D as well as the Director of the Barcelona R&D Lab. He is also an adjunct faculty professor at the department of computer science at Columbia University, New York. Prior to Telefonica, he worked at Microsoft Research, Cambridge and as a Member of Technical Staff at Bell Labs (NJ, USA). During his career he was also worked as a software architect and developer for various startups in the Silicon Valley including Netli (acquired by Akamai), Inktomi (acquired by Yahoo!) and Tahoe Networks (now part of Nokia). He received his Ph.D. from the Ecole Polytechnique Federale de Lausanne, EPFL, Switzerland while working at Institut Eurécom with Prof. Ernst W. Biersack. During his Ph.D. he also worked at AT&T Labs - Research, Florham Park, NJ. He obtained postgraduate studies at EPFL and King's College, London respectively, and an a B.S./M.S. in Telecommunication Engineering from the Public University of Navarra. Pablo was born in Asturias, a beautiful region in the north of Spain