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Although there are privacy-enhancing tools designed to protect users' online privacy, it is surprising to see a lack of user-centric solutions allowing privacy control based on the joint assessment of privacy risks and benefits, due to data…

Cryptography and Security · Computer Science 2019-09-24 Yang Lu , Shujun Li , Athina Ioannou , Iis Tussyadiah

Following the trend of data trading and data publishing, many online social networks have enabled potentially sensitive data to be exchanged or shared on the web. As a result, users' privacy could be exposed to malicious third parties since…

Social and Information Networks · Computer Science 2017-10-31 Jianwei Qian , Xiang-Yang Li , Yu Wang , Shaojie Tang , Taeho Jung , Yang Fan

The unavailability of training data is a permanent source of much frustration in research, especially when it is due to privacy concerns. This is particularly true for location data since previous techniques all suffer from the inherent…

Cryptography and Security · Computer Science 2022-03-15 Szilvia Lestyán , Gergely Ács , Gergely Biczók

Logistics Information System (LIS) is an interactive system that provides information for logistics managers to monitor and track logistics business. In recent years, with the rise of online shopping, LIS is becoming increasingly important.…

Cryptography and Security · Computer Science 2021-09-14 Quanru Chen , Jinguang Han , Jiguo Li , Liquan Chen , Song Li

The Android unrestricted application market, being of open source nature, has made it a popular platform for third-party applications reaching millions of smart devices in the world. This tremendous increase in applications with an…

Cryptography and Security · Computer Science 2021-09-09 Stylianos Monogios , Konstantinos Limniotis , Nicholas Kolokotronis , Stavros Shiaeles

OpenData movement around the globe is demanding more access to information which lies locked in public or private servers. As recently reported by a McKinsey publication, this data has significant economic value, yet its release has…

Databases · Computer Science 2012-05-15 David Leoni

Decentralized Gradient Descent (D-GD) allows a set of users to perform collaborative learning without sharing their data by iteratively averaging local model updates with their neighbors in a network graph. The absence of direct…

Machine Learning · Computer Science 2024-06-05 Abdellah El Mrini , Edwige Cyffers , Aurélien Bellet

While person Re-identification (Re-ID) has progressed rapidly due to its wide real-world applications, it also causes severe risks of leaking personal information from training data. Thus, this paper focuses on quantifying this risk by…

Cryptography and Security · Computer Science 2024-03-21 Junyao Gao , Xinyang Jiang , Huishuai Zhang , Yifan Yang , Shuguang Dou , Dongsheng Li , Duoqian Miao , Cheng Deng , Cairong Zhao

Location data collected from mobile devices represent mobility behaviors at individual and societal levels. These data have important applications ranging from transportation planning to epidemic modeling. However, issues must be overcome…

Machine Learning · Computer Science 2022-01-05 Alex Berke , Ronan Doorley , Kent Larson , Esteban Moro

Human mobility analysis is an important issue in social sciences, and mobility data are among the most sought-after sources of information in ur- Data ban studies, geography, transportation and territory management. In network sciences…

Computers and Society · Computer Science 2013-01-29 Thomas Couronne , Zbigniew Smoreda , Ana-Maria Olteanu

With the randomization approach, sensitive data items of records are randomized to protect privacy of individuals while allowing the distribution information to be reconstructed for data analysis. In this paper, we distinguish between…

Databases · Computer Science 2012-02-16 Ke Wang , Chao Han , Ada Waichee Fu

Group based anonymization is the most widely studied approach for privacy preserving data publishing. This includes k-anonymity, l-diversity, and t-closeness, to name a few. The goal of this paper is to raise a fundamental issue on the…

Databases · Computer Science 2009-05-13 Raymond Chi-Wing Wong , Ada Wai-Chee Fu , Ke Wang , Yabo Xu , Philip S. Yu

Networking research, especially focusing on human mobility, has evolved significantly in the last two decades and now relies on collection and analyzing larger datasets. The increasing sizes of datasets are enabled by larger automated…

Computers and Society · Computer Science 2024-03-12 Leonardo Tonetto , Pauline Kister , Nitinder Mohan , Jörg Ott

People increasingly share personal information, including their photos and photo collections, on social media. This information, however, can compromise individual privacy, particularly as social media platforms use it to infer detailed…

Computer Vision and Pattern Recognition · Computer Science 2019-12-05 Jinghan Yang , Ayan Chakrabarti , Yevgeniy Vorobeychik

When it comes to location-based services (LBS), user privacy protection can be in conflict with security of both users and trips. While LBS providers could adopt privacy preservation mechanisms to obfuscate customer data, the accuracy of…

Cryptography and Security · Computer Science 2021-12-14 Dajiang Suo , M. Elena Renda , Jinhua Zhao

Information about people's movements and the locations they visit enables an increasing number of mobility analytics applications, e.g., in the context of urban and transportation planning, In this setting, rather than collecting or sharing…

Cryptography and Security · Computer Science 2017-06-13 Apostolos Pyrgelis , Carmela Troncoso , Emiliano De Cristofaro

High-latency anonymous communication systems prevent passive eavesdroppers from inferring communicating partners with certainty. However, disclosure attacks allow an adversary to recover users' behavioral profiles when communications are…

Cryptography and Security · Computer Science 2019-10-23 Simon Oya , Carmela Troncoso , Fernando Pérez-González

The prevalence of location-based services contributes to the explosive growth of individual-level trajectory data and raises public concerns about privacy issues. In this research, we propose a novel LSTM-TrajGAN approach, which is an…

Machine Learning · Computer Science 2020-06-19 Jinmeng Rao , Song Gao , Yuhao Kang , Qunying Huang

Recent work has shown that cell phone mobility data has the unique potential to create accurate models for human mobility and consequently the spread of infected diseases. While prior studies have exclusively relied on a mobile network…

Cryptography and Security · Computer Science 2022-06-14 Alexandros Bampoulidis , Alessandro Bruni , Lukas Helminger , Daniel Kales , Christian Rechberger , Roman Walch

Contact tracing is being widely employed to combat the spread of COVID-19. Many apps have been developed that allow for tracing to be done automatically based off location and interaction data generated by users. There are concerns,…

Cryptography and Security · Computer Science 2020-04-09 James Bell , David Butler , Chris Hicks , Jon Crowcroft