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With the tremendous increase in the number of smart phones, app stores have been overwhelmed with applications requiring geo-location access in order to provide their users better services through personalization. Revealing a user's…

Cryptography and Security · Computer Science 2019-01-03 Abhinav Palia , Rajat Tandon

Geo-obfuscation serves as a location privacy protection mechanism (LPPM), enabling mobile users to share obfuscated locations with servers, rather than their exact locations. This method can protect users' location privacy when data…

Cryptography and Security · Computer Science 2024-12-17 Chenxi Qiu , Ruiyao Liu , Primal Pappachan , Anna Squicciarini , Xinpeng Xie

To support location-based services, vehicles must share their location with a server to receive relevant data, compromising their (location) privacy. To alleviate this privacy compromise, the vehicle's location can be obfuscated by adding…

Cryptography and Security · Computer Science 2020-01-22 Tobias Meuser , Oluwasegun Taiwo Ojo , Daniel Bischoff , Antonio Fernández Anta , Ioannis Stavrakakis , Ralf Steinmetz

Camouflaging data by generating fake information is a well-known obfuscation technique for protecting data privacy. In this paper, we focus on a very sensitive and increasingly exposed type of data: location data. There are two main…

Cryptography and Security · Computer Science 2015-05-29 Vincent Bindschaedler , Reza Shokri

Geographic privacy or geo-privacy refers to the keeping private of one's geographic location, especially the restriction of geographical data maintained by personal electronic devices. Geo-privacy is a crucial aspect of personal security;…

Computers and Society · Computer Science 2025-04-15 Yifan Yang , Siqin Wang , Daoyang Li , Yixian Zhang , Shuju Sun , Junzhou He

Vision-Language Models (VLMs) such as GPT-4o now demonstrate a remarkable ability to infer users' locations from public shared images, posing a substantial risk to geoprivacy. Although adversarial perturbations offer a potential defense,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Xinwei Liu , Xiaojun Jia , Yuan Xun , Simeng Qin , Xiaochun Cao

With the increasing popularity of GPS-enabled hand-held devices, location-based applications and services have access to accurate and real-time location information, raising serious privacy concerns for their millions of users. Trying to…

Cryptography and Security · Computer Science 2014-06-17 Konstantinos Chatzikokolakis , Catuscia Palamidessi , Marco Stronati

Location obfuscation functions generated by existing systems for ensuring location privacy are monolithic and do not allow users to customize their obfuscation range. This can lead to the user being mapped in undesirable locations (e.g.,…

Cryptography and Security · Computer Science 2022-10-04 Primal Pappachan , Chenxi Qiu , Anna Squicciarini , Vishnu Sharma Hunsur Manjunath

Protecting location privacy in mobile services has recently received significant consideration as Location-Based Service (LBS) can reveal user locations to attackers. A problem in the existing cloaking schemes is that location…

Cryptography and Security · Computer Science 2017-09-13 Hiep H. Nguyen

The rapid growth of Internet of Things (IoT) devices has introduced significant challenges to privacy, particularly as network traffic analysis techniques evolve. While encryption protects data content, traffic attributes such as packet…

Cryptography and Security · Computer Science 2025-01-28 Daniel Adu Worae , Spyridon Mastorakis

Due to the frequent unauthorized access by commercial drones to Critical Infrastructures (CIs) such as airports and oil refineries, the US-based Federal Avionics Administration (FAA) recently published a new specification, namely RemoteID.…

Cryptography and Security · Computer Science 2022-05-30 Alessandro Brighente , Mauro Conti , Savio Sciancalepore

In recent years, concerns about location privacy are increasing with the spread of location-based services (LBSs). Many methods to protect location privacy have been proposed in the past decades. Especially, perturbation methods based on…

Cryptography and Security · Computer Science 2020-10-27 Shun Takagi , Yang Cao , Yasuhito Asano , Masatoshi Yoshikawa

Rapid growth in the popularity of AR/VR/MR applications and cloud-based visual localization systems has given rise to an increased focus on the privacy of user content in the localization process. This privacy concern has been further…

Computer Vision and Pattern Recognition · Computer Science 2025-02-12 Kunal Chelani , Assia Benbihi , Fredrik Kahl , Torsten Sattler , Zuzana Kukelova

While becoming more and more present in our every day lives, services that operate on users' locations or location trajectories suffer from general fear of misappropriation of the transmitted location data. Several works have investigated…

Cryptography and Security · Computer Science 2018-04-27 Michael Guldner , Torsten Spieldenner , René Schubotz

To date, traffic obfuscation techniques have been widely adopted to protect network data privacy and security by obscuring the true patterns of traffic. Nevertheless, as the pre-trained models emerge, especially transformer-based…

Cryptography and Security · Computer Science 2025-12-25 Quanliang Jing , Xinxin Fan , Yanyan Liu , Jingping Bi

Obfuscation techniques in location-based services (LBSs) have been shown useful to hide the concrete locations of service users, whereas they do not necessarily provide the anonymity. We quantify the anonymity of the location data…

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

The rapid growth of GPS technology and mobile devices has led to a massive accumulation of location data, bringing considerable benefits to individuals and society. One of the major usages of such data is travel time prediction, a typical…

Cryptography and Security · Computer Science 2021-05-10 Fang Liu , Dong Wang , Zhengquan Xu

There are increasing risks of privacy disclosure when sharing the automotive location data in particular functions such as route navigation, driving monitoring and vehicle scheduling. These risks could lead to the attacks including user…

Cryptography and Security · Computer Science 2025-10-24 Haojie Ji , Long Jin , Haowen Li , Chongshi Xin , Te Hu

A critical requirement for modern-day Intelligent Transportation Systems (ITS) is the ability to collect geo-referenced data from connected vehicles and mobile devices in a safe, secure and anonymous way. The Nexagon protocol, which builds…

Cryptography and Security · Computer Science 2025-06-13 Okemawo Obadofin , Joao Barros

Images shared on social media often expose geographic cues. While early geolocation methods required expert effort and lacked generalization, the rise of Large Vision Language Models (LVLMs) now enables accurate geolocation even for…

Cryptography and Security · Computer Science 2025-12-01 Xinyu Zhang , Yixin Wu , Boyang Zhang , Chenhao Lin , Chao Shen , Michael Backes , Yang Zhang
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