Experts identified what may be the most dangerous cybersecurity threat yet to the U.S. power system, malware that can commandeer circuit breakers.

By Rich Heidorn Jr. Two cybersecurity firms on Monday disclosed what may be the most dangerous cyber threat yet to U.S. power systems: malware that can take...

Last month's GridEX II security drill was a valuable test of PJM’s emergency response procedures but lacked in realism, participants said.

More than 1,800 people from 200 industry and government organizations, including PJM, took part in NERC’s 2-day cyber and physical security drill Nov 13-14.

How PJM Interconnection practices cyber security. An attack is a question of when, not if, says an RTO official.