Cybersecurity and Critical Infrastructure
Plan to Protect Critical Infrastructure
Course Progress

Critical Infrastructure Sectors

PPD 21 identifies 16 critical infrastructure sectors and assigns a Federal agency with specialized knowledge and expertise about the sector to coordinate the sector's security preparations.

These sectors and their agencies are listed below.

  • Chemical — DHS
  • Commercial Facilities — DHS
  • Communications — DHS
  • Critical Manufacturing — DHS
  • Dams — DHS
  • Defense Industrial Base — Department of Defense
  • Emergency Services — DHS
  • Energy — Department of Energy
  • Financial Services — Department of the Treasury
  • Food and Agriculture — Department of Agriculture and Department of Health and Human Services
  • Government Facilities — DHS and General Services Administration
  • Healthcare and Public Health — Department of Health and Human Services
  • Information Technology — DHS
  • Nuclear Reactors, Materials, and Waste — DHS
  • Transportation Systems — DHS and Department of Transportation
  • Water and Wastewater Systems — Environmental Protection Agency

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