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Computer Security Resource Center

Computer Security Resource Center

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defensive cyberspace operations (DCO)

Abbreviation(s) and Synonym(s):

DCO

Definition(s):

  Passive and active cyberspace operations intended to preserve the ability to utilize friendly cyberspace capabilities and protect data, networks, net-centric capabilities, and other designated systems.
Source(s):
CNSSI 4009-2015 from DoD JP 3-12