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insider threat

Definitions:

  The threat that an insider will use her/his authorized access, wittingly or unwittingly, to do harm to the security of the United States. This threat can include damage to the United States through espionage, terrorism, unauthorized disclosure, or through the loss or degradation of departmental resources or capabilities.
Sources:
CNSSI 4009-2015 from CNSSD No. 504 - Adapted
NIST SP 800-171 Rev. 2

  The threat that an insider will use her/his authorized access, wittingly or unwittingly, to do harm to the security of organizational operations and assets, individuals, other organizations, and the Nation. This threat can include damage through espionage, terrorism, unauthorized disclosure of national security information, or through the loss or degradation of organizational resources or capabilities.
Sources:
NIST SP 800-53 Rev. 5 from CNSSI 4009-2015 - Adapted

  The threat that an insider will use their authorized access, wittingly or unwittingly, to do harm to the security of the United States. This threat can include damage to the United States through espionage, terrorism, unauthorized disclosure, or through the loss or degradation of departmental resources or capabilities.
Sources:
NIST SP 800-172