NIST 800-53 REV 5 • SYSTEM AND INFORMATION INTEGRITY
SI-5 — Security Alerts, Advisories, and Directives
Receive system security alerts, advisories, and directives from {{ insert: param, si-05_odp.01 }} on an ongoing basis; Generate internal security alerts, advisories, and directives as deemed necessary; Disseminate security alerts, advisories, and directives to: {{ insert: param, si-05_odp.02 }} ; and Implement security directives in accordance with established time frames, or notify the issuing organization of the degree of noncompliance.
CMMC Practice Mapping
Supplemental Guidance
The Cybersecurity and Infrastructure Security Agency (CISA) generates security alerts and advisories to maintain situational awareness throughout the Federal Government. Security directives are issued by OMB or other designated organizations with the responsibility and authority to issue such directives. Compliance with security directives is essential due to the critical nature of many of these directives and the potential (immediate) adverse effects on organizational operations and assets, individuals, other organizations, and the Nation should the directives not be implemented in a timely manner. External organizations include supply chain partners, external mission or business partners, external service providers, and other peer or supporting organizations.
Practitioner Notes
Stay informed about security alerts, advisories, and directives from authoritative sources like CISA, vendor security bulletins, and US-CERT. Then act on them.
Example 1: Subscribe to CISA alerts (us-cert.cisa.gov), Microsoft Security Response Center bulletins, and vendor-specific security advisories for all products in your environment. Assign someone to review these daily and assess applicability to your systems.
Example 2: When a CISA directive is issued (like a Binding Operational Directive for federal agencies), review it for applicability even if you are not a federal agency. These directives often highlight critical vulnerabilities that affect everyone, not just the government.