Distributed hash tables suffer from several security and privacy vulnerabilities, including the problem of Sybil attacks. Existing social network-based solutions to mitigate the Sybil attacks in DHT routing have a high state requirement and do not provide an adequate level of privacy. For instance, such techniques require a user to reveal their social network contacts. We design X-Vine, a prote...

Wide-spread deployment of Wireless Sensor Networks (WSN) necessitates special attention to security issues, amongst which Sybil attacks are the most important ones. As a core to Sybil attacks, malicious nodes try to disrupt network operations by creating several fabricated IDs. Due to energy consumption concerns in WSNs, devising detection algorithms which release the sensor nodes from high com...

A mobile ad hoc network is part of wireless networks which is formed by collection of two or more nodes moving in an arbitrary manner. The nodes are self organizing, adaptive, infrastructure less and has dynamic topology. Hence due to high mobility and multipath propagation network is vulnerable to attacks. There are many types of MANET like VANET (Vehicular Ad hoc Network), SPANs (Smart Phone ...

The nature of wireless ad hoc and sensor networks make them very attractive to attackers. One of the most popular and serious attacks in wireless ad hoc networks is wormhole attack and most proposed protocols to defend against this attack used positioning devices, synchronized clocks, or directional antennas. This paper analyzes the nature of wormhole attack and existing methods of defending me...

Wireless networking relies on a fundamental building block, neighbor discovery (ND). However, the nature of wireless communications makes attacks against ND easy: an adversary can simply replay or relay (wormhole) packets across the network and mislead disconnected nodes they communicate directly. Such attacks can compromise the overlying protocols and applications. Proposals in the literature ...

Until recently vehicles and transportation systems were considered as the realm of mechanical engineers, but the need for the road safety and desire to be connected to the world, has broaden the industry scope. In order to do so Intelligent Transport System has been introduced and for few years, Vehicular Ad hoc Networks are getting much attention. The advance developments, wireless communicati...

The blockchain technology has achieved tremendous success in open (permissionless) decentralized consensus by employing proof-of-work (PoW) or its variants, whereby unauthorized nodes cannot gain disproportionate impact on consensus beyond their computational power. However, PoWbased systems incur a high delay and low throughput, making them ineffective in dealing with real-time applications. O...

The wireless sensor network is an emerging technology in the field of communication. This technology has many advantages but the security issues have been not given much consideration till now. Due to this neglecting, few loopholes in the security have started to occur such as wormhole attack, blackhole attack, etc. In this paper the various aspects have been covered regarding security provisio...