{"id":224808,"date":"2021-04-12T14:38:04","date_gmt":"2021-04-12T11:38:04","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/resilience-against-replay-attacks-in-computer-systems\/"},"modified":"2021-04-12T14:38:04","modified_gmt":"2021-04-12T11:38:04","slug":"resilience-against-replay-attacks-in-computer-systems","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/resilience-against-replay-attacks-in-computer-systems\/","title":{"rendered":"#Resilience against replay attacks in computer systems"},"content":{"rendered":"

“#Resilience against replay attacks in computer systems<\/strong>”<\/p>\n

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From power grids and telecommunications to water supply and financial systems, digital data controls the infrastructure systems on which society relies. These complex, multi-tier systems depend on layered communications to accomplish their tasks\u2014yet every point of contact becomes a potential target, every path of information a potential weak spot for malicious actors to attack.<\/p>\n

A team of researchers from the University of Calabria in Italy has developed the first predictive control scheme that can help distributed networks with multiple agents not only identify these attacks but also protect against them. Their app<\/a>roach was published in IEEE\/CAA Journal of Automatica Sinica<\/i> (Volume 8, Issue 3, March 2021).<\/p>\n

“Modern systems have an increasing complex structure due to the large number of interacting agents aligned to accomplish specific tasks in a distributed fashion,” said paper author Giuseppe Franz\u00e8, associate professor of control engineering in the Department of Informatics, Modeling, Electronics and System Engineering, University of Calabria. “The key result of the paper is that model predictive control strategies, properly adapted to multi-agent configurations, can address difficult scenarios such as the presence of intrusions such as replay attacks.”<\/p>\n

Replay attacks are difficult to identify because the malicious actor uses information already in the system. By stealing an account number or a permission string stolen from one transmission and using it on another agent\u2014or even the agent who originally received the transmission\u2014the actor can gain access or incite a specific action.<\/p>\n

Franz\u00e8 and his team applied a “receding horizon” model, that allows the researchers to predict what the system will look like in the future. By understanding what the system should look like, the model can identify when something unexpected occurs, like the resending of information.<\/p>\n

“The receding horizon property allows us to consider the same structure of the optimization at each next time instant,” Franz\u00e8 said. “This means that if a problem is solvable at the initial time instant the same occurs in the future.”<\/p>\n

Importantly, according to Franz\u00e8, the strategy also offers protection by allowing the system to encapsulate in the moment before the attack, preserving communications until the attack can be successfully blocked.<\/p>\n

“This low-demand model predictive control scheme is an efficient way to address unknown scenarios where external malicious agents affect normal system operations,” Franz\u00e8 said.\n <\/p>\n\n

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Detecting and mitigating network attacks with a multi-prong approach\n <\/p><\/div>\n

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\n More information:<\/strong>
\n Giuseppe Franze et al. Resilience Against Replay Attacks: A Distributed Model Predictive Control Scheme for Networked Multi-Agent Systems, IEEE\/CAA Journal of Automatica Sinica<\/i> (2020). DOI: 10.1109\/JAS.2020.1003542<\/a><\/p><\/div>\n

Provided by
\n Chinese Association of Automation<\/p>\n

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Citation<\/strong>:
\n Resilience against replay attacks in computer systems (2021, April 12)
\n retrieved 12 April 2021
\n from https:\/\/techxplore.com\/news<\/a>\/2021-04-resilience-replay.html<\/p>\n

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