AU-11: AUDIT RECORD RETENTION
TAILORED FOR INDUSTRIAL CONTROL SYSTEMS
The organization retains audit records for [Assignment: organization-defined time period consistent with records retention policy] to provide support for after-the-fact investigations of security incidents and to meet regulatory and organizational information retention requirements.
<SUPPLEMENTAL GUIDANCE
Organizations retain audit records until it is determined that they are no longer needed for administrative, legal, audit, or other operational purposes. This includes, for example, retention and availability of audit records relative to Freedom of Information Act (FOIA) requests, subpoenas, and law enforcement actions. Organizations develop standard categories of audit records relative to such types of actions and standard response processes for each type of action. The National Archives and Records Administration (NARA) General Records Schedules provide federal policy on record retention.
ICS SUPPLEMENTAL GUIDANCE
No ICS Supplemental Guidance.
RELATED CONTROLS: AU-11
CONTROL ENHANCEMENTS
AU-11 (1) AUDIT RECORD RETENTION | LONG-TERM RETRIEVAL CAPABILITY
NOT SELECTED FOR THE NIST ISC CONTROL SET
The organization employs [Assignment: organization-defined measures] to ensure that long-term audit records generated by the information system can be retrieved.
Supplemental Guidance:
Measures employed by organizations to help facilitate the retrieval of audit records include, for example, converting records to newer formats, retaining equipment capable of reading the records, and retaining necessary documentation to help organizational personnel understand how to interpret the records.
REFERENCES:
- NIST Special Publication 800-82 | GUIDE TO INDUSTRIAL CONTROL SYSTEMS (ICS) SECURITY