An energy company providing power in several western U.S. states experienced a “denial-of-service condition” serious enough to warrant reporting it to the government’s energy authority.
The “cyber event” resulted in “interruptions of electrical system operations” for more than 10 hours on March 5, according to an electric emergency and disturbance report filed with the Department of Energy by the affected company.
“DOE received a report about a denial-of-service condition that occurred at an electric utility on March 5, 2019 related to a known vulnerability that required a previously published software update to mitigate,” a spokesperson for the Department of Energy told TechCrunch. “DOE continues to work with our industry partners through the ISACs to ensure the dissemination of the appropriate mitigation information to manage their associated risks.”
The energy company wasn’t named, but it provides power and energy to customers across Los Angeles in California, Salt Lake County in Utah, and Converse County in Wyoming.