The hardware, software, or firmware of the system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based.
Source(s):
NIST SP 800-172
NIST SP 800-172A
NIST SP 800-53 Rev. 5
NIST SP 800-53B
NIST SP 800-171 Rev. 2
NIST SP 800-171 Rev. 1
[Superseded]
The hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based.
Source(s):
NIST SP 800-53 Rev. 4
[Superseded]
under Security Functions