Investor-owned utilities are more likely to have dedicated IT security teams, according to the report. Over the past five years, several independently owned utilities reported dramatic increases in IT security-related staff. Increases were reported from five to 30 employees. Four independently owned utilities used outside vendors or contractors for security defenses or supplemented their staff with outside contractors. Municipality-owned or cooperatively-owned utilities, and the 11 federal entities that own major pieces of the bulk power system, did not provide specific information.