
Biennial exercises that simulate attacks on portions of the power grid in North America have led to a number of security improvements since the first exercise in 2011, industry and government officials said on Thursday. “The point of GridEx is to find our vulnerabilities and improve them,” Tom Fanning, CEO of Southern Company [SO], the second largest utility company in the U.S., said during a media briefing to discuss the latest Grid Security Exercise (GridEx). GridEx V, the fifth version…