Chien said he believed that alert likely referenced the same campaign Symantec has been tracking.
He said dozens of companies had been targeted and that a handful of them, including in the United States, had been compromised on the operational level. That level of access meant that motivation was “the only step left” preventing “sabotage of the power grid,” Chien said.
However, other researchers cast some doubt on the findings.
While concerning, the attacks were “far from the level of being able to turn off the lights, so there’s no alarmism needed,” said Robert M. Lee, founder of U.S. critical infrastructure security firm Dragos Inc, who read the report.