Cyberattack Detection Through Dynamic Watermarking

Dynamic watermarking, as an active intrusion detection technique, can potentially detect replay attacks, spoofing attacks, and deception attacks in the feedback channel for control systems. In this talk, we will discuss our recent work on a novel dynamic watermarking algorithm for finite-state finite-action Markov decision processes and present upper bounds on the mean time between false alarms, and the mean delay between the time an attack occurs and when it is detected. We further compute the sensitivity of the performance of the control system as a function of the watermark. We demonstrate the effectiveness of the proposed dynamic watermarking algorithm by detecting a spoofing attack in a sensor network system.

Abhishek Gupta

Assistant Professor, The Ohio State University on October 29, 2021 at 10:15 AM in EB3 2232

I am Abhishek Gupta, an assistant professor at Electrical and Computer Engineering at The Ohio State University. I completed my Ph.D. in Aerospace Engineering (2014), MS in Applied Mathematics (2012), and MS in Aerospace Engineering (2011), all from University of Illinois at Urbana-Champaign (UIUC). Before coming to UIUC in 2009, I completed my undergraduate in Aerospace Engineering from Indian Institute of Technology, Bombay, India (2005-09). I work on theoretical problems in stochastic control theory, game theory, optimization and information theory, and apply the insights to secure cyberphysical systems and develop market mechanisms for deep renewable integration.

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