Collaborative DDoS Attack Defense for OTA Updates in CAVs using Hyperledger Fabric Blockchain

Recent developments in the Connected Autonomous Vehicle (CAV) industry have triggered the proliferation of Over-the-Air (OTA) update systems for vehicles, providing increased safety, efficiency, and convenience. However, with the increased adoption of these OTA update systems, the threat of Distributed Denial of Service (DDoS) attacks has become a major concern. DDoS attacks on OTA update processes could lead to the disruption of vehicular communication networks, resulting in the loss of control and putting the safety of the vehicles and passengers in jeopardy. To ensure the security of CAVs, it is essential to protect the OTA update process. In this paper, we propose a Hyperledger Fabric (HLF) blockchain-based Collaborative DDoS Attack Defense (CDAD) architecture on OTA update systems in CAVs. This collaborative approach provides a secure and resilient solution that ensures the integrity of the data and minimizes the risk of malicious actors disrupting the OTA update process. It allows multiple OTA service providers to collaborate in real time and protect against potential malicious cyber-attacks. The experimental results show that the system is able to detect and mitigate DDoS attacks with minimal latency and higher throughput while providing improved privacy and security.