"In the past, energy companies typically kept the operational systems that run pipelines or power plants disconnected, or “air gapped,” from the broader internet, which meant that hackers could not easily gain access to the most critical infrastructure. But increasingly that’s no longer the case, as companies install more sophisticated monitoring and diagnostics software that help them operate these systems more efficiently. That potentially creates new cybersecurity risks...Now these systems are all interconnected in ways that the companies themselves don’t always fully understand,” said Marty Edwards, vice president of operational technology for Tenable, a cybersecurity firm. “That provides an opportunity for attacks in one area to propagate elsewhere.” (New York Times, 13 May 2021)