Critical infrastructure sector

A logical collection of assets, systems, or networks that provide a common function to the economy, government, or society; NIPP 2013 addresses 16 critical infrastructure sectors, as identified in PPD-21. (Source: NIPP 2013: Partnering for Critical Infrastructure Security and Resilience).

Source: Starting Point: U.S. Election Systems as Critical Infrastructure, U.S. Election Assistance Commission, https://www.eac.gov/sites/default/files/eac_assets/1/6/starting_point_us_election_systems_as_Critical_Infrastructure.pdf