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Location based service is an indispensable part of today's mobile era. While it brings a lot of benefits to people, the breach to individual location privacy is always a concern and impedes the smooth development of location based service. A user can be easily tracked once she subscribes or uses the service from an untrusted location based service server. In this paper, we try to address this problem...
One of the latest trends of realizing innovative Command and Control (C&C) channels involves leveraging Online Social Networks (OSNs) as a C&C channel. The number of botnets targeting the smartphones and the sophistication of those botnets have progressively increased. Due to their mobility, smartphones connect to a variety of networks which makes it harder for network centric detection of...
Reminder applications are essential applications in mobile devices. Since most smart devices are equipped with accurate localization capabilities, location based reminders emerge in recent smart devices. A user could add a location based reminder which reminds the user to do something once she enters or leaves a location. Convenient as these applications are, a user can be easily tracked once she...
In current location based social networks (LBSNs), users expose their location when they check in at a venue or search a place. The release of location privacy could lead to a severe breach of other privacy, such as identity or health condition. In this paper, we propose a framework to safeguard users' location information as well as the check-in records. Considering the special demands in LBSNs,...
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