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While location data is extremely valuable for various applications, disclosing it prompts serious threats to individuals' privacy. To limit such concerns, organizations often provide analysts with aggregate time-series that indicate, e.g.,…

Cryptography and Security · Computer Science 2020-04-28 Apostolos Pyrgelis , Carmela Troncoso , Emiliano De Cristofaro

Effective healthcare delivery depends on accurate longitudinal health records and addressing patients' concerns regarding the privacy of their information. While patient authentication is essential, reusing patient identifiers exposes…

Cryptography and Security · Computer Science 2026-03-10 Nasif Muslim , Jean-Charles Grégoire

The Topics API for the web is Google's privacy-enhancing alternative to replace third-party cookies. Results of prior work have led to an ongoing discussion between Google and research communities about the capability of Topics to trade off…

Cryptography and Security · Computer Science 2024-08-16 Yohan Beugin , Patrick McDaniel

We consider Location-based Service (LBS) settings, where a LBS provider logs the requests sent by mobile device users over a period of time and later wants to publish/share these logs. Log sharing can be extremely valuable for advertising,…

Databases · Computer Science 2015-03-20 Alin Deutsch , Richard Hull , Avinash Vyas , Kevin Keliang Zhao

Public transport networks(PTNs)are difficult to use when the user is unfamiliar with the area they are traveling to.This is true for both infrequent users(including visitors)and regular users who need to travel to areas with which they are…

Computers and Society · Computer Science 2014-07-02 Mr. Pradip Suresh Mane , Vaishali D. Khairnar

Location-Based Services (LBSs) offer significant convenience to mobile users but pose significant privacy risks, as attackers can infer sensitive personal information through spatiotemporal correlations in user trajectories. Since users'…

Cryptography and Security · Computer Science 2025-11-27 Minghui Min , Jiahui Liu , Mingge Cao , Shiyin Li , Hongliang Zhang , Miao Pan , Zhu Han

Ensuring travelers' safety on roads has become a research challenge in recent years. We introduce a novel safe route planning problem and develop an efficient solution to ensure the travelers' safety on roads. Though few research attempts…

Databases · Computer Science 2022-09-13 Fariha Tabassum Islam , Tanzima Hashem , Rifat Shahriyar

In pervasive computing environments, Location- Based Services (LBSs) are becoming increasingly important due to continuous advances in mobile networks and positioning technologies. Nevertheless, the wide deployment of LBSs can jeopardize…

Cryptography and Security · Computer Science 2016-11-17 Lin Yao , Chi Lin , Xiangwei Kong , Feng Xia , Guowei Wu

Mining health data can lead to faster medical decisions, improvement in the quality of treatment, disease prevention, reduced cost, and it drives innovative solutions within the healthcare sector. However, health data is highly sensitive…

Cryptography and Security · Computer Science 2022-04-28 Iyiola E. Olatunji , Jens Rauch , Matthias Katzensteiner , Megha Khosla

Password authentication is the most commonly used technique to authenticate the user validity. However, due to its simplicity, it is vulnerable to pseudo attacks. It can be enhanced using various biometric techniques such as thumb…

Cryptography and Security · Computer Science 2011-08-04 Hazarath Munaga , J. V. R. Murthy , N. B. Venkateswarlu

With the aim of informing sound policy about data sharing and privacy, we describe successful re-identification of patients in an Australian de-identified open health dataset. As in prior studies of similar datasets, a few mundane facts…

Computers and Society · Computer Science 2017-12-18 Chris Culnane , Benjamin I. P. Rubinstein , Vanessa Teague

In recent years, it has been claimed that releasing accurate statistical information on a database is likely to allow its complete reconstruction. Differential privacy has been suggested as the appropriate methodology to prevent these…

Cryptography and Security · Computer Science 2023-01-25 Krishnamurty Muralidhar , Josep Domingo-Ferrer

Location-based services (LBSs) in vehicular ad hoc networks (VANETs) offer users numerous conveniences. However, the extensive use of LBSs raises concerns about the privacy of users' trajectories, as adversaries can exploit temporal…

Cryptography and Security · Computer Science 2024-01-23 Mingge Cao , Haopeng Zhu , Minghui Min , Yulu Li , Shiyin Li , Hongliang Zhang , Zhu Han

This paper presents a novel system for reconstructing high-resolution GPS trajectory data from truncated or synthetic low-resolution inputs, addressing the critical challenge of balancing data utility with privacy preservation in mobility…

Signal Processing · Electrical Eng. & Systems 2026-04-28 Haruki Yonekura , Ren Ozeki , Hamada Rizk , Hirozumi Yamaguchi

The overturning of the Internet Privacy Rules by the Federal Communications Commissions (FCC) in late March 2017 allows Internet Service Providers (ISPs) to collect, share and sell their customers' Web browsing data without their consent.…

Cryptography and Security · Computer Science 2018-11-26 Ghazaleh Beigi , Ruocheng Guo , Alexander Nou , Yanchao Zhang , Huan Liu

Recently, Person Re-Identification (Re-ID) has received a lot of attention. Large datasets containing labeled images of various individuals have been released, allowing researchers to develop and test many successful approaches. However,…

Computer Vision and Pattern Recognition · Computer Science 2022-12-21 Jose Huaman , Felix O. Sumari , Luigy Machaca , Esteban Clua , Joris Guerin

As an indispensable personalized service within Location-Based Social Networks (LBSNs), the Point-of-Interest (POI) recommendation aims to assist individuals in discovering attractive and engaging places. However, the accurate…

Information Retrieval · Computer Science 2024-01-29 Jing Long , Tong Chen , Guanhua Ye , Kai Zheng , Nguyen Quoc Viet Hung , Hongzhi Yin

Today people increasingly have the opportunity to opt-in to "usage-based" automotive insurance programs for reducing insurance premiums. In these programs, participants install devices in their vehicles that monitor their driving behavior,…

Cryptography and Security · Computer Science 2014-01-03 Bernhard Firner , Shridatt Sugrim , Yulong Yang , Janne Lindqvist

This paper studies a novel privacy-preserving anonymization problem for pedestrian images, which preserves personal identity information (PII) for authorized models and prevents PII from being recognized by third parties. Conventional…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Junwu Zhang , Mang Ye , Yao Yang

We present a novel approach that protects trajectory privacy of users who access location-based services through a moving k nearest neighbor (MkNN) query. An MkNN query continuously returns the k nearest data objects for a moving user…

Databases · Computer Science 2011-04-15 Tanzima Hashem , Lars Kulik , Rui Zhang