Individual, group, or organization responsible for ensuring that the information security requirements necessary to protect the organization’s core missions and business processes are adequately addressed in all aspects of enterprise architecture including reference models, segment and solution architectures, and the resulting information systems supporting those missions and business processes.
Source(s):
CNSSI 4009-2015
from
NIST SP 800-37 Rev. 1
NIST SP 800-137
under Information Security Architect
from
NISTIR 7298
NIST SP 800-37 Rev. 1
under Information Security Architect