A cyberattack on the U.S. energy grid disrupted plant visibility at Utah-based sPower back in March. The company experienced a series of lost connections between its main control center and remote power-generation sites. That operational disruption makes the attack the first of its kind in the country. The incident highlights the need for stronger defenses, such as granular network segmentation and continuous monitoring to quickly detect unauthorized activities or unauthorized activities before adversaries can cause real damage to your operations. An analyst with the Department of Energy said that the cause of the lost connections was traced to firewall reboots.
Source: https://threatpost.com/solar-wind-power-utility-cyberattack/149816/