U.S. utilities face constant cyber-espionage and denial-of-service attacks against industrial-control systems. Emergency response team from DHS ICS-CERT will fly out to utilities across the country to investigate security incidents. Seven of the security incidents originated as spear-phishing attacks via e-mail against utility personnel. 11 of the 17 incidents were very “sophisticated,” signaling a well-organized “threat actor,” Sanaz Browarny said. Older equipment that is hard to bring up to date is a big issue, he said.”]