Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
IPTPS '01 Revised Papers from the First International Workshop on Peer-to-Peer Systems
The sybil attack in sensor networks: analysis & defenses
Proceedings of the 3rd international symposium on Information processing in sensor networks
The Security and Privacy of Smart Vehicles
IEEE Security and Privacy
Detecting and correcting malicious data in VANETs
Proceedings of the 1st ACM international workshop on Vehicular ad hoc networks
An evaluation of inter-vehicle ad hoc networks based on realistic vehicular traces
Proceedings of the 7th ACM international symposium on Mobile ad hoc networking and computing
Detection and localization of sybil nodes in VANETs
DIWANS '06 Proceedings of the 2006 workshop on Dependability issues in wireless ad hoc networks and sensor networks
Impact of radio propagation models in vehicular ad hoc networks simulations
Proceedings of the 3rd international workshop on Vehicular ad hoc networks
Securing vehicular ad hoc networks
Journal of Computer Security - Special Issue on Security of Ad-hoc and Sensor Networks
Privacy-Preserving Detection of Sybil Attacks in Vehicular Ad Hoc Networks
MOBIQUITOUS '07 Proceedings of the 2007 Fourth Annual International Conference on Mobile and Ubiquitous Systems: Networking&Services (MobiQuitous)
Detecting Sybil attacks in Wireless Sensor Networks using neighboring information
Computer Networks: The International Journal of Computer and Telecommunications Networking
Using TPMs to secure vehicular ad-hoc networks (VANETs)
WISTP'08 Proceedings of the 2nd IFIP WG 11.2 international conference on Information security theory and practices: smart devices, convergence and next generation networks
A novel defense mechanism against sybil attacks in VANET
Proceedings of the 3rd international conference on Security of information and networks
Local Density Estimation and Dynamic Transmission-Range Assignment in Vehicular Ad Hoc Networks
IEEE Transactions on Intelligent Transportation Systems
Prevention of DoS Attacks in VANET
Wireless Personal Communications: An International Journal
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Vehicular Ad Hoc Network (VANET) is vulnerable to many security threats. One severe attack is Sybil attack, in which a malicious node forges a large number of fake identities in order to disrupt the proper functioning of VANET applications. In this paper, a distributed and robust approach is presented to defend against Sybil attack. Proposed scheme localizes the fake identities of malicious vehicles by analyzing the consistent similarity in neighborhood information of neighbors of these fake identities. Beacon packets are exchanged periodically by all the vehicles to announce their presence and get aware of neighboring nodes. Each node periodically keep a record of its neighboring nodes. In proposed approach, each node exchange groups of its neighboring nodes periodically and perform the intersection of these groups. If some nodes observe that they have similar neighbors for a significant duration of time, these similar neighbors are identified as Sybil nodes. Proposed approach is able to locate Sybil nodes quickly without the requirement of secret information exchange and special hardware support. We evaluate our proposed approach on the realistic traffic scenario. Experiment results demonstrate that detection rate increases when optimal numbers of Sybil nodes are forged by the attacker.