Chipmakers and providers of other infrastructure components for the energy sector are responding to reports that the U.S. power grid remains vulnerable to attack by launching new initiatives to help improve cybersecurity. "It's huge," said KPMG's Greg Bell, on the size of the potential market. "Almost every device we put in a power plant or an oil refinery is computer-controlled. They all have to be secured. Cybersecurity is a growth area across all the different industries, but especially oil and gas and [power] transmission."