I. Introduction
Recent years have witnessed numerous “cyber” attacks against Industrial Control Systems (ICS) and Critical Infrastructure (CI). For example, Colonial Pipeline, one of the nation’s largest pipelines, was forced to shut down its pipeline after being hit by a ransomware attack in May 2021 [1]. In February 2021, a hacker tried to poison the water supply in a Florida community that serves 15,000 people [2]. These incidents underscore the dire consequences that a security breach or compromise of ICS or CI could have on the economy and public safety.