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Cloud computing is considered one of the most dominant paradigms in the Information Technology (IT) industry these days. It offers new cost effective services on-demand such as Software as a Service (SaaS), Infrastructure as a Service (IaaS) and Platform as a Service (PaaS). However, with all of these services promising facilities and benefits, there are still a number of challenges associated with...
In any system-of-systems the potential exists for interactions between systems to occur that may affect the security of the overall system. We present a scenario that aims to highlight such problems, in particular that of security at a network boundary. This scenario considers cooperation and interactions between organisations and systems in the context of a major public event, such as a sporting...
Wireless Sensor Networks (WSNs) is a recent technological advancement in Micro Electro Mechanical Systems (MEMS). It has a large number of applications in the health sector, for example, the telemonitoring of human psychophysical data, tracking and drug administration in hospitals. In this paper we present a novel framework using body area WSNs and gaming to improve a patient's physical health. The...
Future wireless sensor networks (WSNs) are predicted to use thousands of sensor nodes. Moreover due to the limited resources of sensor nodes a core challenge is how to prolong WSN lifetime. Group-based or cluster-based approaches are well known methods used to enhance the lifetime and performance of such large scale networks. For these approaches each group leader in a group of nodes plays an important...
In many applications of Wireless Sensor Networks a Sink is interested in aggregated data instead of exact values from all sensors. To send aggregated data, it is also helpful to reduce the amount of data to be transmitted and thereby conserve energy. Indeed current in-network aggregation schemes are helpful to conserve energy but they are designed without considering possible security issues related...
Key establishment and its management in wireless sensor networks is a challenging problem due to the limited resources and disordered structure of such networks. In this paper we propose a dynamic group-based key management technique. In our solution, a large-scale network is divided into small logical groups. Each group is assigned a unique master key that will be used to generate other distinct...
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