EUROCRYPT '93 Workshop on the theory and application of cryptographic techniques on Advances in cryptology
Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Secure verification of location claims
WiSe '03 Proceedings of the 2nd ACM workshop on Wireless security
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
Urban multi-hop broadcast protocol for inter-vehicle communication systems
Proceedings of the 1st ACM international workshop on Vehicular ad hoc networks
Proceedings of the 2nd ACM international workshop on Vehicular ad hoc networks
Fair sharing of bandwidth in VANETs
Proceedings of the 2nd ACM international workshop on Vehicular ad hoc networks
GrooveSim: a topography-accurate simulator for geographic routing in vehicular networks
Proceedings of the 2nd ACM international workshop on Vehicular ad hoc networks
The security of vehicular ad hoc networks
Proceedings of the 3rd ACM workshop on Security of ad hoc and sensor networks
An RSSI-based Scheme for Sybil Attack Detection in Wireless Sensor Networks
WOWMOM '06 Proceedings of the 2006 International Symposium on on World of Wireless, Mobile and Multimedia Networks
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
Improved security in geographic ad hoc routing through autonomous position verification
Proceedings of the 3rd international workshop on Vehicular ad hoc networks
Vehicular opportunistic communication under the microscope
Proceedings of the 5th international conference on Mobile systems, applications and services
Securing vehicular ad hoc networks
Journal of Computer Security - Special Issue on Security of Ad-hoc and Sensor Networks
Providing VANET security through active position detection
Computer Communications
Defense against Sybil attack in vehicular ad hoc network based on roadside unit support
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
Challenges of intervehicle ad hoc networks
IEEE Transactions on Intelligent Transportation Systems
Efficient and secure storage of private keys for pseudonymous vehicular communication
Proceedings of the 2013 ACM workshop on Security, privacy & dependability for cyber vehicles
Joint routing and location-based service in VANETs
Journal of Parallel and Distributed Computing
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Sybil attacks have been regarded as a serious security threat to Ad hoc Networks and Sensor Networks. They may also impair the potential applications in Vehicular Ad hoc Networks (VANETs) by creating an illusion of traffic congestion. In this paper, we make various attempts to explore the feasibility of detecting Sybil attacks by analyzing signal strength distribution. First, we propose a cooperative method to verify the positions of potential Sybil nodes. We use a Random Sample Consensus (RANSAC)-based algorithm to make this cooperative method more robust against outlier data fabricated by Sybil nodes. However, several inherent drawbacks of this cooperative method prompt us to explore additional approaches. We introduce a statistical method and design a system which is able to verify where a vehicle comes from. The system is termed the Presence Evidence System (PES). With PES, we are able to enhance the detection accuracy using statistical analysis over an observation period. Finally, based on realistic US maps and traffic models, we conducted simulations to evaluate the feasibility and efficiency of our methods. Our scheme proves to be an economical approach to suppressing Sybil attacks without extra support from specific positioning hardware.