Vanet is the branch of networking which deals with the communication of data between different vehicles. The vehicles have been designed with sensors that communicate with RSU and other vehicles available in the range. In the vanet network various attackers perform attack on the network to stop the communication of different vehicles. This attack can make collision between different nodes. The ...

Obtaining user opinion (using votes) is essential to ranking user-generated online content. However, any content voting system is susceptible to the Sybil attack where adversaries can out-vote real users by creating many Sybil identities. In this paper, we present SumUp, a Sybilresilient vote aggregation system that leverages the trust network among users to defend against Sybil attacks. SumUp ...

The threat analysis for routing protocol is a significant issue in the ad-hoc network security. In this paper we propose a framework in which the vulnerabilities from the Sybil attack for ad-hoc routing protocol can be modeled in a mathematic approach, and the formal analysis is carried out with a specific proof system under the extended strand space model in order to further verify the validit...

In this paper, we assess the protection mechanisms entered into recent clients to fight against the Sybil attack in KAD, a widely deployed Distributed Hash Table. We study three main mechanisms: a protection against flooding through packet tracking, an IP address limitation and a verification of identities. We evaluate their efficiency by designing and adapting an attack for several KAD clients...

Wireless Sensor Networks (WSNs) are susceptible to Sybil attacks in which malicious node creates a huge number of fake identities in order to gain an excessively high advantage through a Byzantine method. A Sybil node using only one physical device may generate random number of additional node identities and can be used to disrupt normal functioning of the WSN, such as multipath routing which i...

Vehicular Ad hoc Networks (VANET) is the subclass of Mobile Ad Hoc Networks (MANETs). It is the most advanced technology that provides Intelligent Transportation System (ITS) in wireless communication among vehicles to vehicles and road side equipment (RSUs) to vehicles according to IEEE 802.11p standard. VANET provides broad range of safety and non safety applications. Safety application provi...

Peer-to-peer systems are known to be vulnerable to the Sybil attack. The lack of a central authority allows a malicious user to create many fake identities (called Sybil nodes) pretending to be independent honest nodes. The goal of the malicious user is to influence the system on his/her behalf. In order to detect the Sybil nodes and prevent the attack, a reputation system is used for the nodes...

We present a scheme based on the Blom scheme for resisting the Sybil type attacks. In this scheme, the authority pre-distributes the combination of the secret used in the Blom scheme. The attacker needs to compromise the specified number of nodes to compromise the whole systems. Furthermore, our scheme which provides a stronger relationship between ID and key would make authentication more reli...