According to a Department of Homeland Security report, the U.S. energy sector tops the list of industries under cyber attack:

A report issued today by the US Department for Homeland Security says that in 2014 the Industrial Control Systems Cyber Emergency Response Team (ICS-CERT) responded to 245 incidents reported by asset owners and industry partners.

The energy sector, says Jeremy Cowan, led all others again in 2014 with 79 reported incidents, followed by manufacturing at 65 and worryingly healthcare at 15 reported incidents. ICS-CERT’s continuing partnership with the Energy sector reportedly provides many opportunities to share information and collaborate on incident response efforts.