510 citations · 775 across the 39 of their papers we have counts for
6 papers · 1 filter
Supporting Secure Dynamic Alert Zones Using Searchable Encryption and Graph Embedding
Sina Shaham, Gabriel Ghinita, Cyrus Shahabi
Location-based alerts have gained increasing popularity in recent years, whether in the context of healthcare (e.g., COVID-19 contact tracing), marketing (e.g., location-based adve…
An Efficient and Secure Location-based Alert Protocol using Searchable Encryption and Huffman Codes
Sina Shaham, Gabriel Ghinita, Cyrus Shahabi
Location data are widely used in mobile apps, ranging from location-based recommendations, to social media and navigation. A specific type of interaction is that of location-based…
Spatial Privacy Pricing: The Interplay between Privacy, Utility and Price in Geo-Marketplaces
Kien Nguyen, John Krumm, Cyrus Shahabi
A geo-marketplace allows users to be paid for their location data. Users concerned about privacy may want to charge more for data that pinpoints their location accurately, but may…
A Secure Location-based Alert System with Tunable Privacy-Performance Trade-off
Gabriel Ghinita, Kien Nguyen, Mihai Maruseac +1
Monitoring location updates from mobile users has important applications in many areas, ranging from public safety and national security to social networks and advertising. However…
A Privacy-Preserving, Accountable and Spam-Resilient Geo-Marketplace
Kien Nguyen, Gabriel Ghinita, Muhammad Naveed +1
Mobile devices with rich features can record videos, traffic parameters or air quality readings along user trajectories. Although such data may be valuable, users are seldom reward…
Differentially Private Publication of Location Entropy
Hien To, Kien Nguyen, Cyrus Shahabi
Location entropy (LE) is a popular metric for measuring the popularity of various locations (e.g., points-of-interest). Unlike other metrics computed from only the number of (uniqu…