critical infrastructure sectors

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Definitions:

The 16 sectors designated by PPD-21 as vital to the United States, namely: chemical; commercial facilities; communications; critical manufacturing; dams; the defense industrial base; emergency services; energy; financial services; food and agriculture; government facilities; healthcare and public health; information technology; nuclear reactors, materials, and waste; transportation systems; and water and wastewater systems.
Sources:
CNSSI 4009-2015 from NIST SP 800-30 Rev. 1
NIST SP 800-30 Rev. 1 under Critical Infrastructure Sectors

Glossary Comments

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See NISTIR 7298 Rev. 3 for additional details.