Modeling location obfuscation for continuous query

Saxena, Anuj; Bera, Debajyoti; Goyal, Vikram

doi:10.1016/j.jisa.2018.12.001

Cited by 9 publications

(5 citation statements)

References 7 publications

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“…In ambiguity mechanisms, the spatial resolution of the user is decreased to pre-serve the exact level of their presence. In some cases, a set of fake locations is produced for the user to protect their privacy [14]. Points Of Interest (PoI) and adding random data are two examples of ambiguity methods [15].…”

Section: Privacy-preserving Methodsmentioning

confidence: 99%

A Low-complexity trajectory privacy preservation approach for indoor fingerprinting positioning systems

Sazdar

Ghorashi

Moghtadaiee

et al. 2020

Journal of Information Security and Applications

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Section: Privacy-preserving Methodsmentioning

confidence: 99%

A Low-complexity trajectory privacy preservation approach for indoor fingerprinting positioning systems

Sazdar

Ghorashi

Moghtadaiee

et al. 2020

Journal of Information Security and Applications

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“…A theoretical model for location obfuscation is presented in [16]; this model allows the specification of different obfuscation levels. To clarify the proposed model's effectiveness, the authors analyze a popular square grid-based obfuscation mechanism, focusing mainly on obfuscation-based privacypreserving mechanisms.…”

Section: Related Workmentioning

confidence: 99%

“…A cloaking region consists of several locations in which the user could be, ensuring that they are present in one of them. Approaches such as in [8][9][10][11][12][13][14][15][16][17][18] give support to the cloaking region. Overall, these approaches deal with a trusted third party, named the anonymizer, which is responsible for choosing other locations according to the type of protection that the user is requesting.…”

Section: Introductionmentioning

confidence: 99%

“…Meantime, in [4,7,[28][29][30][31], query privacy is addressed. In addition, the researches presented in [2][3][4] and [16] deal with queries in continuous location-based service (cLBS) (i.e., a cLBS is regularly receiving users' queries, who frequently change their locations). There is a wide range of research that addresses one or two particular issues (location privacy, location safety, and query privacy), and to the best of our knowledge, no previous work deals with all the services mentioned above simultaneously in a cLBS.…”

Section: Introductionmentioning

confidence: 99%

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Location-Query-Privacy and Safety Cloaking Schemes for Continuous Location-Based Services

Gutiérrez-Soto

Galdames

Faúndez

et al. 2022

Mobile Information Systems

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Nowadays, people can access a wide range of applications and services for mobile device users. Among them, location-based services (LBS), where the application needs the user’s position to provide the service. Some examples of these applications are Uber and Waze. Nevertheless, the repetitive use of an LBS can reveal confidential user information; thus, behavior patterns—such as daily routes—could be deduced by some dishonest LBS. Furthermore, a query’s keywords could provide information about a user’s health status or future position when it inquires about hospitals or hotels. Therefore, an adversary can use this information for unethical purposes, and users need mechanisms that protect their privacy. At present, several approaches separately tackle location privacy, location security, and query privacy. To the best of our knowledge, no previous work deals with all these mentioned aspects simultaneously especially when users demand continuous protection when moving and accessing an LBS. This paper proposes two batch techniques to provide location privacy, location safety, and query privacy in an environment that considers a continuous LBS. These techniques apply l -diversity (query privacy) in a context that contemplates query semantics, as well as a diverse set of users’ paths. Extensive experimentation shows that both techniques are cost-effective and scalable solutions that offer unified location privacy, query privacy, and location safety protection for many mobile users.

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“…ese location obfuscation techniques are achieved by deliberately reducing the resolution of the user's location to protect user privacy, namely, using a cloaking region instead of the user's actual location. To release ambiguous location is often used as a simple and effective technique [9][10][11]. Space Twist framework avoids the high computational cost and communication cost caused by the ASR.…”

Section: Related Workmentioning

confidence: 99%

Towards Region Queries with Strong Location Privacy in Mobile Network

Yang

Jiang

2021

Mobile Information Systems

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With the interaction of geographic data and social data, the inference attack has been mounting up, calling for new technologies for privacy protection. Although there are many tangible contributions of spatial-temporal cloaking technologies, traditional technologies are not enough to resist privacy intrusion. Malicious attackers still steal user-sensitive information by analyzing the relationship between location and query semantics. Reacting to many interesting issues, oblivious transfer (OT) protocols are introduced to guarantee location privacy. To our knowledge, OT is a cryptographic primitive between two parties and can be used as a building block for any arbitrary multiparty computation protocol. Armed with previous privacy-preserving technologies, for example, OT, in this work, we first develop a novel region queries framework that can provide robust privacy for location-dependent queries. We then design an OT-assist privacy-aware protocol (or OTPA) for location-based service with rigorous security analysis. In short, the common query of the client in our solution can be divided into two parts, the region query R q and the content query C q , to achieve location k -anonymity, location m -diversity, and query r -diversity, which ensure the privacy of two parties (i.e., client and server). Lastly, we instantiate our OTPA protocol, and experiments show that the proposed OTPA protocol is reasonable and effective.

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Modeling location obfuscation for continuous query

Cited by 9 publications

References 7 publications

A Low-complexity trajectory privacy preservation approach for indoor fingerprinting positioning systems

A Low-complexity trajectory privacy preservation approach for indoor fingerprinting positioning systems

Location-Query-Privacy and Safety Cloaking Schemes for Continuous Location-Based Services

Towards Region Queries with Strong Location Privacy in Mobile Network

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