Trust-Aware Sybil Attack Detection for Resilient Vehicular Communication

TL;DR

This paper introduces TASER, a trust-aware framework for detecting Sybil attacks in vehicular networks that reduces detection time and operates without roadside infrastructure.

Contribution

The paper presents a novel trust-based detection framework for Sybil attacks in VANETs that improves speed and accuracy without infrastructure reliance.

Findings

Reduces attack detection times by up to 66% in urban scenarios.

Maintains detection accuracy within 3% despite up to 30% Sybil nodes.

Operates effectively without roadside infrastructure.

Abstract

Connected autonomous vehicles, or Vehicular Ad hoc Networks (VANETs), hold great promise, but concerns persist regarding safety, privacy, and security, particularly in the face of Sybil attacks, where malicious entities falsify neighboring traffic information. Despite advancements in detection techniques, many approaches suffer from processing delays and reliance on broad architecture, posing significant risks in mitigating attack damages. To address these concerns, our research proposes a Trust Aware Sybil Event Recognition (TASER) framework for assessing the integrity of vehicle data in VANETs. This framework evaluates information exchanged within local vehicle clusters, maintaining a cumulative trust metric for each vehicle based on reported data integrity. Suspicious entities failing to meet trust metric thresholds are statistically evaluated, and their legitimacy is challenged using directional antennas to verify their reported GPS locations. We evaluate our framework using the OMNeT++ discrete event simulator, SUMO traffic simulator, and VEINS interface with TraCI API. Our approach reduces attack detection times by up to 66% in urban scenarios, with accuracy varying by no more than 3% across simulations containing up to 30% Sybil nodes and operates without reliance on roadside infrastructure.