The security controls (i.e., safeguards or countermeasures) for an information system that are primarily implemented and executed by the information system through mechanisms contained in the hardware, software, or firmware components of the system.
Sources:
FIPS 200
under TECHNICAL CONTROLS
NIST SP 800-137
from
FIPS 200
NIST SP 800-18 Rev. 1
NIST SP 800-82r3
from
FIPS 200
Security controls (i.e., safeguards or countermeasures) for an information system that are primarily implemented and executed by the information system through mechanisms contained in the hardware, software, or firmware components of the system.
Sources:
NIST SP 800-30 Rev. 1
from
FIPS 200
NIST SP 800-39
from
FIPS 200