#PRIVATE CONTACT DISCOVERY DE CRISTOFARO PDF#
#PRIVATE CONTACT DISCOVERY DE CRISTOFARO FREE#

For instance, our protocol has an online time of 14 seconds and an overall time of 2.1 minutes to securely compute the intersection of two sets of 1 million items each. Differentially private techniques provide reasonable accuracy only in protocol of De Cristofaro et al., we improve the running time by 8 24. Tsudik, Experimenting with fast private set intersection, in Trust and Trustworthy Computing, Springer, 2012, 55-73. Small counts can be used for ranking hotspots, data generalization forįorecasting traffic, hotspot discovery, and map inference, while sampling isĮffective for location labeling and anomaly detection when the dataset is Our results show that some defenses fail across the board, while others workįor specific tasks on aggregate location time-series. Vis-a-vis the utility loss they introduce for various mobility analytics tasks. Hiding, and perturbation, and evaluate their ability to thwart the attack We experiment with a wide range of defenses based on generalization, The Friend Finder protocol is a private set intersection protocol that takes a. Particularity of users' mobility patterns, play a crucial role in the attack's Marcin Nagy, Emiliano De Cristofaro, Alexandra Dmitrienko, N. We find that the volume of contributed data, as well as the regularity and Time-series, where an adversary tries to infer whether a specific user Understand Membership Inference Attacks (MIAs) on aggregate location In this paper, we perform a measurement study to Indicate, e.g., how many people are in a location at a time interval, rather To limit suchĬoncerns, organizations often provide analysts with aggregate time-series that

We will never save or sell your search history.

#PRIVATE CONTACT DISCOVERY DE CRISTOFARO FREE#

PSI is a special case of secure two-party computation. Startpage’s search engine and Anonymous View feature are free and simple ways to take control of your online privacy. For example, contact discovery between a client with 1024 contacts and a server with 67 million user entries takes 1.36 sec (when using server multi-threading) and uses only 4.28 MiB of communication.

#PRIVATE CONTACT DISCOVERY DE CRISTOFARO PDF#

Authors: Apostolos Pyrgelis, Carmela Troncoso, Emiliano De Cristofaro Download PDF Abstract: While location data is extremely valuable for various applications,ĭisclosing it prompts serious threats to individuals' privacy. nostics 3, DNA searching 31, social network check-ins, private contact discovery 21, botnet detection, advertising 26, and many others. We report on a highly optimized prototype implementation of our system, which is practical on real-world set sizes.

Private contact discovery de cristofaro