Blockchain-Enabled Mitigation Strategies for Distributed Denial of Service Attacks in IoT Sensor Networks:An Experimental Approach  

作　　者：Kithmini Godewatte Arachchige Mohsin Murtaza Chi-Tsun Cheng Bader M.Albahlal Cheng-Chi Lee 

机构地区：[1]Department of Engineering Technologies,School of Science,Computing and Engineering Technologies,Swinburne University,Melbourne,3122,Australia [2]School of Engineering,Science Technology Engineering and Mathematics College,RMIT University,Melbourne,VIC 3001,Australia [3]Department of Information Technology,College of Computer and Information Sciences,Imam Mohammad Ibn Saud Islamic University(IMSIU),Riyadh,11432,Saudi Arabia [4]Department of Library and Information Science,Fu Jen Catholic University,New Taipei City,24205,Taiwan,China [5]Department of Computer Science and Information Engineering,Asia University,Taichung City,41354,Taiwan,China

出　　处：《Computers, Materials & Continua》2024年第12期3679-3705,共27页计算机、材料和连续体（英文）

基　　金：supported and funded by the Deanship of Scientific Research at Imam Mohammad Ibn Saud Islamic University(IMSIU)(Grant number IMSIU-RP23017).

摘　　要：Information security has emerged as a crucial consideration over the past decade due to escalating cyber security threats,with Internet of Things(IoT)security gaining particular attention due to its role in data communication across various industries.However,IoT devices,typically low-powered,are susceptible to cyber threats.Conversely,blockchain has emerged as a robust solution to secure these devices due to its decentralised nature.Nevertheless,the fusion of blockchain and IoT technologies is challenging due to performance bottlenecks,network scalability limitations,and blockchain-specific security vulnerabilities.Blockchain,on the other hand,is a recently emerged information security solution that has great potential to secure low-powered IoT devices.This study aims to identify blockchain-specific vulnerabilities through changes in network behaviour,addressing a significant research gap and aiming to mitigate future cybersecurity threats.Integrating blockchain and IoT technologies presents challenges,including performance bottlenecks,network scalability issues,and unique security vulnerabilities.This paper analyses potential security weaknesses in blockchain and their impact on network operations.We developed a real IoT test system utilising three prevalent blockchain applications to conduct experiments.The results indicate that Distributed Denial of Service(DDoS)attacks on low-powered,blockchain-enabled IoT sensor networks cause measurable anomalies in network and device performance,specifically:(1)an average increase in CPU core usage to 34.32%,(2)a reduction in hash rates by up to 66%,(3)an increase in batch timeout by up to 14.28%,and(4)an increase in block latency by up to 11.1%.These findings suggest potential strategies to counter future DDoS attacks on IoT networks.

关 键 词：Blockchain cyber intrusions DDOS IOT low powered sensors VULNERABILITIES wireless network 

分 类 号：TP393.44[自动化与计算机技术—计算机应用技术] TP212[自动化与计算机技术—计算机科学与技术]