Publications by Igor Bilogrevic

A Predictive Model for User Motivation and Utility Implications of Privacy-Protection Mechanisms in Location Check-Ins

Jean-Pierre Hubaux, Igor Bilogrevic, Reza Shokri, Kévin Clément Huguenin, Joana Catarina Soares Machado, Stefan Mihaila, Italo Ivan Dacosta Petrocelli

Location check-ins contain both geographical and semantic information about the visited venues. Semantic information is usually represented by means of tags (e.g., “restaurant”). Such data can reveal some personal information about users beyond what they a ...

2018

Towards Usable Checksums: Automating the Integrity Verification ofWeb Downloads for the Masses

Mauro Cherubini, Mathias Jacques Jean-Marc Humbert, Igor Bilogrevic, Bertil Chapuis, Kévin Clément Huguenin, Alexandre Meylan

Internet users can download software for their computers from app stores (e.g., Mac App Store and Windows Store) or from other sources, such as the developers' websites. Most Internet users in the US rely on the latter, according to our representative stud ...

ASSOC COMPUTING MACHINERY2018

A Machine-Learning Based Approach to Privacy-Aware Information-Sharing in Mobile Social Networks

Jean-Pierre Hubaux, Igor Bilogrevic, Murtuza Jadliwala, Kévin Clément Huguenin, Berker Agir, Maria Gazaki

Contextual information about users is increasingly shared on mobile social networks. Examples of such information include users' locations, events, activities, and the co-presence of others in proximity. When disclosing personal information, users take int ...

Elsevier Science Bv2016

Predicting Users' Motivations behind Location Check-Ins and Utility Implications of Privacy Protection Mechanisms

Jean-Pierre Hubaux, Igor Bilogrevic, Reza Shokri, Kévin Clément Huguenin, Stefan Mihaila

Location check-ins contain both geographical and semantic information about the visited venues, in the form of tags (e.g., “restaurant”). Such data might reveal some personal information about users beyond what they actually want to disclose, hence their p ...

2015

Privacy-Preserving Optimal Meeting Location Determination on Mobile Devices

Jean-Pierre Hubaux, Imad Aad, Igor Bilogrevic, Vishal Joneja, Murtuza Jadliwala

Equipped with state-of-the-art smartphones and mobile devices, today's highly interconnected urban population is increasingly dependent on these gadgets to organize and plan their daily lives. These applications often rely on current (or preferred) locatio ...

Ieee-Inst Electrical Electronics Engineers Inc2014

On Multi-Dimensional Privacy in Context-Aware Mobile Networks

Igor Bilogrevic

By the end of 2013, the number of internet-connected mobile devices is expected to exceed that of humans. Omnipresent and context-aware, mobile devices enable people to communicate and exchange data anytime and almost anywhere. The myriad of ”digital footp ...

EPFL2014

Secure and Private Proofs for Location-Based Activity Summaries in Urban Areas

Jean-Pierre Hubaux, Igor Bilogrevic, Kévin Clément Huguenin, Thi Van Anh Pham

Activity-based social networks, where people upload and share information about their location-based activities (e.g., the routes of their activities), are increasingly popular. Such systems, however, raise privacy and security issues: the service provider ...

2014

Optimizing Mix-zone Coverage in Pervasive Wireless Networks

Jean-Pierre Hubaux, Igor Bilogrevic, Murtuza Jadliwala

Location privacy is a major concern in pervasive networks where static device identifiers enable malicious eavesdroppers to continuously track users and their movements. In order to prevent such identifier-based tracking, devices could coordinate regular i ...

2013

Adaptive Information-Sharing for Privacy-Aware Mobile Social Networks

Jean-Pierre Hubaux, Igor Bilogrevic, Murtuza Jadliwala, Kévin Clément Huguenin, Berker Agir

Personal and contextual information are increasingly shared via mobile social networks. Users' locations, activities and their co-presence can be shared easily with online ``friends'', as their smartphones already access such information from embedded sens ...

2013

Inferring Social Ties in Academic Networks Using Short-Range Wireless Communications

Jean-Pierre Hubaux, Igor Bilogrevic, Murtuza Jadliwala, Kévin Clément Huguenin, Valtteri Niemi, Florent Lopez

WiFi base stations are increasingly deployed in both public spaces and private companies, and the increase in their density poses a significant threat to the privacy of connected users. Prior studies have provided evidence that it is possible to infer the ...

2013

Big Brother Knows Your Friends: on Privacy of Social Communities in Pervasive Networks

Jean-Pierre Hubaux, Imad Aad, Igor Bilogrevic, Laurent Bindschaedler, Murtuza Jadliwala, Valtteri Niemi

Wireless network operators increasingly deploy WiFi hotspots and low-power, low-range base stations in order to satisfy users' growing demands for context-aware services and performance. In addition to providing better service, such capillary infrastructur ...

2012

Track Me If You Can: On the Effectiveness of Context-based Identifier Changes in Deployed Mobile Networks

Jean-Pierre Hubaux, Imad Aad, Igor Bilogrevic, Laurent Bindschaedler, Murtuza Jadliwala, Valtteri Niemi

Location privacy is a major concern in an increasingly connected and highly pervasive network of mobile users. Novel location-based applications and device-to-device services (on these mobile devices) are gaining popularity, but at the same time, these ser ...

Internet Society2012

OREN: Optimal Revocations in Ephemeral Networks

Jean-Pierre Hubaux, Maxime Raya, Igor Bilogrevic

Public-key certificates allow a multitude of entities to securely exchange and verify the authenticity of data. However, the ability to effectively revoke compromised or untrustworthy certificates is of great importance when coping with misbehavior. In thi ...

2011

Meetings through the Cloud: Privacy-Preserving Scheduling on Mobile Devices

Jean-Pierre Hubaux, Imad Aad, Igor Bilogrevic, Murtuza Jadliwala, Valtteri Niemi

Mobile devices are increasingly being used to store and manage users' personal information, as well as to access popular third-party context-based services. Very often, these applications need to determine common availabilities among a set of user schedule ...

Elsevier2011

Privacy in Mobile Computing for Location-Sharing-Based Services

Jean-Pierre Hubaux, Imad Aad, Igor Bilogrevic, Murtuza Jadliwala

Location-Sharing-Based Services (LSBS) complement Location-Based Services by using locations from a group of users, and not just individuals, to provide some contextualized service based on the locations in the group. However, there are growing concerns ab ...

Springer2011

Privacy-Preserving Activity Scheduling on Mobile Devices

Jean-Pierre Hubaux, Imad Aad, Igor Bilogrevic, Murtuza Jadliwala, Valtteri Niemi

Progress in mobile wireless technology has resulted in the increased use of mobile devices to store and manage users' personal schedules. Users also access popular context-based services, typically provided by third-party providers, by using these devices ...

ACM2011

Optimizing Mixing in Pervasive Networks: A Graph-Theoretic Perspective

Jean-Pierre Hubaux, Igor Bilogrevic, Murtuza Jadliwala

One major concern in pervasive wireless applications is location privacy, where malicious eavesdroppers, based on static device identifiers, can continuously track users. As a commonly adopted countermeasure to prevent such identifier-based tracking, devic ...

Springer2011

Optimal Revocations in Ephemeral Networks: A Game-Theoretic Framework

Jean-Pierre Hubaux, Maxime Raya, Igor Bilogrevic

Revocation of public-key certificates is an important security primitive. In this paper, we design a fully distributed local certificate revocation scheme for ephemeral networks - a class of extremely volatile wireless networks with short-duration and shor ...

IEEE2010