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Location privacy-preserving mechanisms (LPPMs) have been extensively studied for protecting users' location privacy by releasing a perturbed location to third parties such as location-based service providers. However, when a user's…

Databases · Computer Science 2020-05-20 Yang Cao , Yonghui Xiao , Li Xiong , Liquan Bai , Masatoshi Yoshikawa

Differential privacy is a popular privacy model within the research community because of the strong privacy guarantee it offers, namely that the presence or absence of any individual in a data set does not significantly influence the…

Cryptography and Security · Computer Science 2017-02-09 Jordi Soria-Comas , Josep Domingo-Ferrer , David Sánchez , David Megías

Location-based services are getting more popular day by day. Finding nearby stores, proximity-based marketing, on-road service assistance, etc., are some of the services that use location-based services. In location-based services, user…

Cryptography and Security · Computer Science 2022-11-22 Santosh Kumar Upadhyaya , Srinivas Vivek

We consider the geo-indistinguishability approach to location privacy, and the trade-off with respect to utility. We show that, given a desired degree of geo-indistinguishability, it is possible to construct a mechanism that minimizes the…

Cryptography and Security · Computer Science 2014-08-26 Nicolás E. Bordenabe , Konstantinos Chatzikokolakis , Catuscia Palamidessi

With the advent of GPS enabled smartphones, an increasing number of users is actively sharing their location through a variety of applications and services. Along with the continuing growth of Location-Based Social Networks (LBSNs),…

Cryptography and Security · Computer Science 2015-03-24 Luca Rossi , Matthew J. Williams , Christoph Stich , Mirco Musolesi

Directly releasing those data raises privacy and liability (e.g., due to unauthorized distribution of such datasets) concerns since location data contain users' sensitive information, e.g., regular moving patterns and favorite spots. To…

Cryptography and Security · Computer Science 2023-04-25 Yuzhou Jiang , Emre Yilmaz , Erman Ayday

In recent years, local differential privacy (LDP) has emerged as a technique of choice for privacy-preserving data collection in several scenarios when the aggregator is not trustworthy. LDP provides client-side privacy by adding noise at…

Machine Learning · Statistics 2021-10-28 Tejas Kulkarni , Joonas Jälkö , Samuel Kaski , Antti Honkela

The introduction and advancements in Local Differential Privacy (LDP) variants have become a cornerstone in addressing the privacy concerns associated with the vast data produced by smart devices, which forms the foundation for data-driven…

Cryptography and Security · Computer Science 2023-09-13 Likun Qin , Nan Wang , Tianshuo Qiu

In the past decade analysis of big data has proven to be extremely valuable in many contexts. Local Differential Privacy (LDP) is a state-of-the-art approach which allows statistical computations while protecting each individual user's…

Cryptography and Security · Computer Science 2019-07-30 Björn Bebensee

Differential privacy is a privacy measure based on the difficulty of discriminating between similar input data. In differential privacy analysis, similar data usually implies that their distance does not exceed a predetermined threshold.…

Optimization and Control · Mathematics 2021-06-25 Genki Sugiura , Kaito Ito , Kenji Kashima

The prevalence of mobile devices and Location-Based Services (LBS) necessitate the study of Location Privacy-Preserving Mechanisms (LPPM). However, LPPMs reduce the utility of LBS due to the noise they add to users' locations. Here, we…

Information Theory · Computer Science 2019-12-06 Nazanin Takbiri , Virat Shejwalker , Amir Houmansadr , Dennis L. Goeckel , Hossein Pishro-Nik

Differential privacy protects an individual's privacy by perturbing data on an aggregated level (DP) or individual level (LDP). We report four online human-subject experiments investigating the effects of using different approaches to…

Cryptography and Security · Computer Science 2020-04-01 Aiping Xiong , Tianhao Wang , Ninghui Li , Somesh Jha

Proximity-based social applications let users interact with people that are currently close to them, by revealing some information about their preferences and whereabouts. This information is acquired through passive geo-localisation and…

Cryptography and Security · Computer Science 2016-05-24 Silvia Puglisi , David Rebollo-Monedero , Jordi Forné

Electric vehicles (EVs) are gaining popularity due to the growing awareness for a sustainable future. However, since there are disproportionately fewer charging stations than EVs, range anxiety plays a major role in the rise in the number…

Cryptography and Security · Computer Science 2024-02-07 Ugur Ilker Atmaca , Sayan Biswas , Carsten Maple , Catuscia Palamidessi

Many popular applications use traces of user data to offer various services to their users. However, even if user data is anonymized and obfuscated, a user's privacy can be compromised through the use of statistical matching techniques that…

Information Theory · Computer Science 2018-06-29 Nazanin Takbiri , Amir Houmansadr , Dennis L. Goeckel , Hossein Pishro-Nik

Extended differential privacy, a generalization of standard differential privacy (DP) using a general metric, has been widely studied to provide rigorous privacy guarantees while keeping high utility. However, existing works on extended DP…

Cryptography and Security · Computer Science 2023-07-19 Natasha Fernandes , Yusuke Kawamoto , Takao Murakami

People often refer to a place of interest (POI) by an alias. In e-commerce scenarios, the POI alias problem affects the quality of the delivery address of online orders, bringing substantial challenges to intelligent logistics systems and…

Social and Information Networks · Computer Science 2021-09-21 Tianfu He , Guochun Chen , Chuishi Meng , Huajun He , Zheyi Pan , Yexin Li , Sijie Ruan , Huimin Ren , Ye Yuan , Ruiyuan Li , Junbo Zhang , Jie Bao , Hui He , Yu Zheng

Although mobile devices benefit users in their daily lives in numerous ways, they also raise several privacy concerns. For instance, they can reveal sensitive information that can be inferred from location data. This location data is shared…

Computers and Society · Computer Science 2025-04-25 Antoine Boutet , Victor Morel

Today, vast amounts of location data are collected by various service providers. These location data owners have a good idea of where their users are most of the time. Other businesses also want to use this information for location…

Cryptography and Security · Computer Science 2019-05-01 Emre Yilmaz , Hakan Ferhatosmanoglu , Erman Ayday , Remzi Can Aksoy

The growing public nature of academic journals along with current best practices of sharing primary data for scientific research are profoundly valuable for the understanding of a species and their conservation efforts. On the other hand,…

Cryptography and Security · Computer Science 2019-07-17 Hayyu Imanda , Joss Wright