See system security officer (SSO).
Sources:
NIST SP 800-30 Rev. 1
under Information System Security Officer
NIST SP 800-39
under Information System Security Officer
NIST SP 800-60 Vol. 1 Rev. 1
under Information System Security Officer
from
CNSSI 4009 - Adapted
NIST SP 800-60 Vol. 2 Rev. 1
under Information System Security Officer
from
CNSSI 4009 - Adapted
Individual assigned responsibility by the senior agency information security officer, authorizing official, management official, or information system owner for ensuring that the appropriate operational security posture is maintained for an information system or program.
Sources:
NIST SP 800-18 Rev. 1
under Information System Security Officer
from
CNSSI 4009 - Adapted
NISTIR 8170
under Information System Security Officer
Individual assigned responsibility for maintaining the appropriate operational security posture for an information system or program.
[Note: ISSO responsibility may be assigned by the senior agency information security officer, authorizing official, management official, or information system owner.]
Sources:
NIST SP 800-128
under Information System Security Officer