Routing attacks are a major challenge in the process of designing of effective and robust security mechanisms for WSNs. This research work proposes a distributed wormhole detection algorithm called Wormhole Geographic Distributed Detection (WGDD), that is based on detecting disorder of the networks which is caused by the existence of a wormhole inside the network.

MANET is a kind of wireless network which is decentralized in nature and comprise of moving mobile nodes. Due to changing topology of such network it impose critical security protocol design against harmful attacks such as Sybil Attack. In a Sybil attack a malicious node can produce and manage a large number of logical identities on a single physical device. This gives the misapprehension to th...

Large-scale peer-to-peer systems face security threats from faulty or hostile remote computing elements. To resist these threats, many such systems employ redundancy. However, if a single faulty entity can present multiple identities, it can control a substantial fraction of the system, thereby undermining this redundancy. One approach to preventing these “Sybil attacks” is to have a trusted ag...

This paper focuses on designing incentive mechanisms for overlay multicast systems. Existing proposals on the problem are no longer able to provide proper incentives when rational users collude or launch sybil attacks. To overcome this key limitation, we propose a novel decentralized DCast multicast protocol and prove that it offers a novel concept of safety-net guarantee: A user running the pr...

Many obstacles impede the successful deployment of sensor networks. In addition to the limited resources issue, security is a major concern especially for applications such as home security monitoring, military, and battle field applications. In this paper we present a defense mechanism against wormhole attacks in wireless sensor networks. Specifically, a simple routing tree protocol is propose...

Traversal time and hop count analysis (TTHCA) is a recent wormhole detection algorithm for mobile ad hoc networks (MANET) which provides enhanced detection performance against all wormhole attack variants and network types. TTHCA involves each node measuring the processing time of routing packets during the route discovery process and then delivering the measurements to the source node. In a pa...

Wormhole attacks can destabilize or disable wireless sensor networks. In a typical wormhole attack, the attacker receives packets at one point in the network, forwards them through a wired or wireless link with less latency than the network links, and relays them to another point in the network. This paper describes a distributed wormhole detection algorithm for wireless sensor networks, which ...

Electronic voting has become popular in democratic countries, and thus the cyber security of this system is demanded. In paper, some attacks were made on a proposed electronic election model based blockchain technology, where impact each attack (Sybil, DDoS, Eclipse, Selfish mining, 51% attack) was calculated, time which it achieved calculated. study, we investigate Blockchain technology’s surf...

The recent advancements in the wireless technology and their wide-spread deployment have made remarkable enhancements in efficiency in the corporate and industrial and Military sectors The increasing popularity and usage of wireless technology is creating a need for more secure wireless Ad hoc networks. This paper aims researched and developed a new protocol that prevents wormhole attacks on a ...