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Abstract
A cognitive wireless sensor network (CWSN) is an emerging technology with great potential to avoid traditional wireless problems such as reliability. One of the major challenges CWSNs face today is security. A CWSN is a special network which has many constraints compared to a traditional wireless network and many different features compared to a traditional wireless sensor network. While security challenges have been widely tackled in traditional networks, this is a novel area in CWSNs. This article discusses a wide variety of attacks on CWSNs, their taxonomy and different security measures available to handle the attacks. Also, future challenges to be faced are proposed.
Highlights
Global data traffic in telecommunications has an annual growth rate of over 50%
In regards to wireless networks, one of the fastest growing sectors in recent years was undoubtedly that of wireless sensor networks (WSNs)
As well as the primary user emulation (PUE) attack, the community of researchers in cognitive radio (CR) has been studying other kind of attacks originate from different wireless networks, such as denial of service (DoS) attack or jamming attack. These attacks have special characteristics in cognitive networks, for example, article [19] studies these features for DoS, and [20] shows a countermeasure based on frequency hopping to avoid jamming attacks
Summary
Global data traffic in telecommunications has an annual growth rate of over 50%. While the growth in traffic is stunning, both the rapid adoption of wireless technology over the globe and its penetration through all layers of society are even more amazing. The main different between traditional WSN and new cognitive wireless sensor network (CWSN) paradigm is that in CWSN nodes change their transmission and reception parameters according to the radio environment. CR nodes collaborate to make better decisions but these communications are ways to propagate the attack in the network. Considering these characteristics since the attacker point of view, the fundamental differences between a traditional WSN and the CWSN network are
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