Geographical and Energy Aware Routing (GEAR) is an efficient routing protocol in wireless sensor networks (WSN). It behaves well in the face of routing attacks, but it is incapable of defending bogus routing information, sybil attack and selective forwarding. Aimed at this problem, this paper present a location pairwise keys bootstrap scheme based secure geographical and energy aware routing pr...

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...

Results: The detection of fraudulent raters is not easy since they can behave strategically to camouflage themselves. We explore the potential strengths and limitations of blockchain-based reputation systems under two attack goals: ballot-stuffing and bad-mouthing, and various attack models including constant attack, camouflage attack, whitewashing attack and sybil attack. Blockchain-based repu...

While most online social media accounts are controlled by humans, these platforms also host automated agents called social bots or sybil accounts. Recent literature reported on cases of social bots imitating humans to manipulate discussions, alter the popularity of users, pollute content and spread misinformation, and even perform terrorist propaganda and recruitment actions. Here we present Bo...

Security is becoming a major concern for many mission-critical applications wireless sensor networks (WSNs) are envisaged to support. The inherently vulnerable characteristics of WSNs appoint them susceptible to various types of attacks. This work restrains its focus on how to defend against a particularly harmful form of attack, the Sybil attack. Sybil attacks can severely deteriorate the netw...