U.S.: Attack on California electrical substation points to vulnerabilities to power grid

The attack began just before 1 a.m. on April 16 last year, when someone slipped

into an underground vault not far from a busy freeway and cut telephone cables. Within half an hour, snipers opened fire on a nearby electrical substation. Shooting for 19 minutes, they surgically knocked out 17 giant transformers that funnel power to Silicon Valley. A minute before a police car arrived, the shooters disappeared into the

night. Read Article