TrafficAdaptor
Chenxi Qiu, Yan Li, Anna Squicciarini, Juanjuan Zhao, Chengzhong Xu, Primal Pappachan · Proceedings of the 30th International Conference on Advances in Geographic Information Systems · 2022
One of the most popular location privacy-preserving mechanisms applied in location-based services (LBS) is location obfuscation, where mobile users are allowed to report obfuscated locations instead of their real locations to services. Many existing obfuscation approaches consider mobile users that can move freely over a region. However, this is inadequate for protecting the location privacy of vehicles, as their mobility is restricted by external factors, such as road networks and traffic flows. This auxiliary information about external factors helps an attacker to shrink the search range of vehicles' locations, increasing the risk of location exposure.