http://www.securityweek.com/researchers-go-inside-blackenergy-malware
FBI Warns of Cyber Threat to Electric Grid
DHS intel report downplayed cyber threat to power grid
Three months after a Department of Homeland Security intelligence report downplayed the threat of a cyber attack against the U.S. electrical grid, DHS and the FBI began a nationwide program warning of the dangers faced by U.S. utilities from damaging cyber attacks like the recent hacking against Ukraine's power grid.
http://freebeacon.com/issues/fbi-warns-cyber-threat-electric-grid/