Why haven’t hackers taken down the power grid?

"“Taking down major infrastructure on a national or regional level harms the bad guys as much as the good guys,” says Richard Forno, director of the Graduate Cybersecurity Program at the University of Maryland at Baltimore County. “The Russians [could] shut down the power grid. But if they shut it down, they won’t be able to track us.”

“If you don’t want to be eaten by lions,” Forno says, “don’t walk into the lion’s den with steaks taped over your body.”"