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Open AccessArticle

A Symbiotic Relationship Based Leader Approach for Privacy Protection in Location Based Services

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Communication and Computer Engineering Department, Faculty of Engineering, NAHDA University, Beni Suef 62511, Egypt
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Faculty of Engineering and Applied Science, University of Regina, Regina, SK S4S 0A2, Canada
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Department of Computer Science, Faculty of Computing and Information Technology, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Author to whom correspondence should be addressed.
ISPRS Int. J. Geo-Inf. 2020, 9(6), 408; https://doi.org/10.3390/ijgi9060408
Received: 27 May 2020 / Revised: 20 June 2020 / Accepted: 23 June 2020 / Published: 26 June 2020
Location-based services (LBS) form the main part of the Internet of Things (IoT) and have received a significant amount of attention from the research community as well as application users due to the popularity of wireless devices and the daily growth in users. However, there are several risks associated with the use of LBS-enabled applications, as users are forced to send their queries based on their real-time and actual location. Attacks could be applied by the LBS server itself or by its maintainer, which consequently may lead to more serious issues such as the theft of sensitive and personal information about LBS users. Due to this fact, complete privacy protection (location and query privacy protection) is a critical problem. Collaborative (cache-based) approaches are used to prevent the LBS application users from connecting to the LBS server (malicious parties). However, no robust trust approaches have been provided to design a trusted third party (TTP), which prevents LBS users from acting as an attacker. This paper proposed a symbiotic relationship-based leader approach to guarantee complete privacy protection for users of LBS-enabled applications. Specifically, it introduced the mutual benefit underlying the symbiotic relationship, dummies, and caching concepts to avoid dealing with untrusted LBS servers and achieve complete privacy protection. In addition, the paper proposed a new privacy metric to predict the closeness of the attacker to the moment of her actual attack launch. Compared to three well-known approaches, namely enhanced dummy location selection (enhanced-DLS), hiding in a mobile crowd, and caching-aware dummy selection algorithm (enhanced-CaDSA), our experimental results showed better performance in terms of communication cost, resistance against inferences attacks, and cache hit ratio. View Full-Text
Keywords: cache; attack launch; dummies; leader; privacy protection; reputation cache; attack launch; dummies; leader; privacy protection; reputation
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Alrahhal, H.; Alrahhal, M.S.; Jamous, R.; Jambi, K. A Symbiotic Relationship Based Leader Approach for Privacy Protection in Location Based Services. ISPRS Int. J. Geo-Inf. 2020, 9, 408.

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