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By Brad D. Williams on May 06, 2021 at 2:31 PM Substation at Idaho National Laboratory WASHINGTON: The NSA is spotlighting the importance of conducting risk-based security reviews of operational technologies (OT) across critical infrastructure, including defense. “A significant shift in how [OT] are viewed, evaluated, and secured within the US is needed to prevent malicious cyber actors from executing successful, and potentially damaging, cyber effects,” the guidance says. OT include hardware and software that enable infrastructure physical components to function, such as circuit breakers, motors, and valves. OT are prevalent throughout critical infrastructure environments, from power grids and telecommunications networks to manufacturing plants, transportation systems, and energy pipelines. ....
The only surprise about last week’s hacking of a water treatment plant in Florida is that this sort of thing doesn’t happen more often. The intrusion was all too easy. The hacker entered the plant’s control system through a commonly used tool called TeamViewer, which lets engineers monitor the network’s machines and adjust their settings remotely. The hacker boosted the level of lye an ingredient in drain cleaners from 100 parts per million, its normal level, to 11,100 parts per million, which would have poisoned anyone drinking the water. Advertisement Hundreds of people in the small town of Oldsmar, near Tampa Bay, avoided illness, possibly death, only because a plant operator noticed the manipulation on the system’s monitors and manually restored the settings to normal. If the operator had been reading or snoozing, letting the system run on autopilot, as sometimes happens at computer-controlled utilities, disaster would have struck. ....