Fast tracing method for Sybil attack in VANETs
2023 IEEE 98TH VEHICULAR TECHNOLOGY CONFERENCE, VTC2023-FALL(2023)
Abstract
In VANETs, malicious nodes launch Sybil attacks using false traffic information by forging basic safety messages, leading to erroneous decisions and ultimately causing traffic accidents that threaten the lives of passengers. Existing Sybil attack detection methods can only mitigate the impact of Sybil attacks and cannot trace the attack back to find malicious nodes. Meanwhile, malicious nodes can suppress the performance of tracing methods with the help of pseudonym exchange policy. This study proposes a fast Sybil attack tracing method in VANETs to address the above challenges. The method quickly identifies suspicious BSMs through cascading operations. Finally, the results of cascading operations are used to perform source estimation and complete the attack tracing. Experimental results show the method's precision >= 97% and recall >= 96%.
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Key words
ITS,VANETs,Sybil detection,Position verification,Attack tracing
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