Operator definition in Computer Security terms:
Definition(s): An individual accessing a cryptographic module or a process (subject) operating on behalf of the individual, regardless of the assumed role.
Source(s): FIPS 140-2
An FCKMS role that is authorized to operate an FCKMS (e.g., initiate the FCKMS, monitor performance, and perform backups), as directed by the system administrator.
Source(s): NIST SP 800-152
reference: CSRC Glossary