NIST SP 800-53 Rev 5 is the control catalog behind many federal and customer security requirements. This index links a guide for each base control, with the evidence to collect and the gaps auditors find.
Key takeaways
- 322 guides, each written for defenders and based on the source record.
- 800-53 binds federal systems and, by contract, some suppliers. For everyone else it is a reference.
- Start with the free dependency scan at gold.safeguard.sh/scan if you want a quick look at your own packages.
All guides
- NIST 800-53 AC-1 Access Control Policy: What to Show an Auditor
- NIST 800-53 AC-10 Concurrent Session Control in Plain English
- NIST 800-53 AC-11 Device Lock: Screen Locks Auditors Accept
- NIST 800-53 AC-12 Session Termination and Timeouts
- NIST 800-53 AC-13: Withdrawn, Where the Requirements Went
- NIST 800-53 AC-14: Actions Allowed Without Logging In
- NIST 800-53 AC-15: Withdrawn, Automated Marking Moved to MP-3
- NIST 800-53 AC-16 Security and Privacy Attributes Explained
- NIST 800-53 AC-17 Remote Access: Evidence for VPN and Beyond
- NIST 800-53 AC-18 Wireless Access: What to Document
- NIST 800-53 AC-19 Mobile Device Access Control Explained
- NIST 800-53 AC-2 Account Management: What to Show an Auditor
- NIST 800-53 AC-20 Use of External Systems and Third Party Access
- NIST 800-53 AC-21 Information Sharing With Partners
- NIST 800-53 AC-22 Publicly Accessible Content Review
- NIST 800-53 AC-23 Data Mining Protection Explained
- NIST 800-53 AC-24 Access Control Decisions Explained
- NIST 800-53 AC-25 Reference Monitor: What It Really Means
- NIST 800-53 AC-3 Access Enforcement: Proving Access Rules Work
- NIST 800-53 AC-4 Information Flow Enforcement Explained
- NIST 800-53 AC-5 Separation of Duties: Evidence and Examples
- NIST 800-53 AC-6 Least Privilege: Evidence That Holds Up
- NIST 800-53 AC-7 Unsuccessful Logon Attempts and Lockouts
- NIST 800-53 AC-8 System Use Notification Banners
- NIST 800-53 AC-9 Previous Logon Notification Explained
- NIST 800-53 AT-1 Awareness and Training Policy and Procedures
- NIST 800-53 AT-2 Literacy Training and Awareness: Evidence
- NIST 800-53 AT-3 Role-Based Training: What to Show an Auditor
- NIST 800-53 AT-4 Training Records: What to Show an Auditor
- NIST 800-53 AT-5 Withdrawn: Where Security Group Contacts Went
- NIST 800-53 AT-6 Training Feedback: What to Show an Auditor
- NIST 800-53 AU-1 Audit Policy and Procedures: What to Show
- NIST 800-53 AU-10 Non-repudiation: What to Show an Auditor
- NIST 800-53 AU-11 Audit Record Retention: What to Show
- NIST 800-53 AU-12 Audit Record Generation: What to Show
- NIST 800-53 AU-13 Monitoring for Information Disclosure
- NIST 800-53 AU-14 Session Audit: What to Show an Auditor
- NIST 800-53 AU-15 Withdrawn: Alternate Audit Logging Capability
- NIST 800-53 AU-16 Cross-organizational Audit Logging
- NIST 800-53 AU-2 Event Logging: What to Show an Auditor
- NIST 800-53 AU-3 Content of Audit Records: What to Show
- NIST 800-53 AU-4 Audit Log Storage Capacity: What to Show
- NIST 800-53 AU-5 Audit Logging Failures: What to Show an Auditor
- NIST 800-53 AU-6 Audit Record Review: What to Show an Auditor
- NIST 800-53 AU-7 Audit Record Reduction and Reports: What to Show
- NIST 800-53 AU-8 Time Stamps: What to Show an Auditor
- NIST 800-53 AU-9 Protection of Audit Information: What to Show
- NIST 800-53 CA-1 Assessment Policy and Procedures: What to Show
- NIST 800-53 CA-2 Control Assessments: What to Show an Auditor
- NIST 800-53 CA-3 Information Exchange: What to Show an Auditor
- NIST 800-53 CA-4 Withdrawn: Security Certification Moved to CA-2
- NIST 800-53 CA-5 Plan of Action and Milestones: What to Show
- NIST 800-53 CA-6 Authorization: What to Show an Auditor
- NIST 800-53 CA-7 Continuous Monitoring: What to Show an Auditor
- NIST 800-53 CA-8 Penetration Testing and What to Show an Auditor
- NIST 800-53 CA-9 Internal System Connections Explained
- NIST 800-53 CM-1 Configuration Management Policy and Procedures
- NIST 800-53 CM-10 Software Usage Restrictions and License Evidence
- NIST 800-53 CM-11 User Installed Software Policy and Evidence
- NIST 800-53 CM-12 Information Location and the Data Map Auditors Want
- NIST 800-53 CM-13 Data Action Mapping for Privacy Reviews
- NIST 800-53 CM-14 Signed Components and Code Signature Checks
- NIST 800-53 CM-2 Baseline Configuration and What to Show an Auditor
- NIST 800-53 CM-3 Configuration Change Control Evidence Guide
- NIST 800-53 CM-4 Impact Analyses Before You Change Systems
- NIST 800-53 CM-5 Access Restrictions for Change in Practice
- NIST 800-53 CM-6 Configuration Settings Evidence and Hardening Guide
- NIST 800-53 CM-7 Least Functionality and Reducing Attack Surface
- NIST 800-53 CM-8 System Component Inventory That Survives an Audit
- NIST 800-53 CM-9 Configuration Management Plan Explained
- NIST 800-53 CP-1 Contingency Planning Policy and Procedures
- NIST 800-53 CP-10 System Recovery and Reconstitution Evidence
- NIST 800-53 CP-11 Alternate Communications Protocols
- NIST 800-53 CP-12 Safe Mode of Operation
- NIST 800-53 CP-13 Alternative Security Mechanisms
- NIST 800-53 CP-2 Contingency Plan and What to Show an Auditor
- NIST 800-53 CP-3 Contingency Training and Role Based Evidence
- NIST 800-53 CP-4 Contingency Plan Testing That Proves Readiness
- NIST 800-53 CP-5 Contingency Plan Update Is Withdrawn
- NIST 800-53 CP-6 Alternate Storage Site and Backup Location Evidence
- NIST 800-53 CP-7 Alternate Processing Site and Failover Evidence
- NIST 800-53 CP-8 Telecommunications Services: A Backup Path
- NIST 800-53 CP-9 System Backup: Prove You Can Restore
- NIST 800-53 IA-1 Identification and Authentication Policy
- NIST 800-53 IA-10 Adaptive Authentication Explained
- NIST 800-53 IA-11 Re-authentication: When to Ask Again
- NIST 800-53 IA-12 Identity Proofing: Who Is Really Joining?
- NIST 800-53 IA-13 Identity Providers and Authorization Servers
- NIST 800-53 IA-2 Organizational Users: MFA Evidence for Auditors
- NIST 800-53 IA-3 Device Identification and Authentication
- NIST 800-53 IA-4 Identifier Management: Names That Stay Unique
- NIST 800-53 IA-5 Authenticator Management: Passwords, Keys, Tokens
- NIST 800-53 IA-6 Authentication Feedback: Mask the Secret
- NIST 800-53 IA-7 Cryptographic Module Authentication
- NIST 800-53 IA-8 Non-organizational Users: Customers and Partners
- NIST 800-53 IA-9 Service Identification and Authentication
- NIST 800-53 IR-1 Incident Response Policy and Procedures
- NIST 800-53 IR-10 Withdrawn: Where It Went
- NIST 800-53 IR-2 Incident Response Training: Role Based Proof
- NIST 800-53 IR-3 Incident Response Testing: Run the Drill
- NIST 800-53 IR-4 Incident Handling: What to Show an Auditor
- NIST 800-53 IR-5 Incident Monitoring: Keep the Record
- NIST 800-53 IR-6 Incident Reporting: Internal and External
- NIST 800-53 IR-7 Incident Response Assistance: Who Helps?
- NIST 800-53 IR-8 Incident Response Plan: Contents Auditors Expect
- NIST 800-53 IR-9 Information Spillage Response
- NIST 800-53 MA-1 Maintenance Policy and Procedures
- NIST 800-53 MA-2 Controlled Maintenance: Records and Approvals
- NIST 800-53 MA-3 Maintenance Tools: What to Show an Auditor
- NIST 800-53 MA-4 Nonlocal Maintenance: Remote Sessions Explained
- NIST 800-53 MA-5 Maintenance Personnel: Who May Touch Your Systems
- NIST 800-53 MA-6 Timely Maintenance: Spare Parts and Support
- NIST 800-53 MA-7 Field Maintenance: Restrict It on Critical Systems
- NIST 800-53 MP-1 Media Protection Policy: What an Auditor Reads
- NIST 800-53 MP-2 Media Access: Who Can Reach Removable Media
- NIST 800-53 MP-3 Media Marking: Labels and Handling Caveats
- NIST 800-53 MP-4 Media Storage: Secure Until Destroyed
- NIST 800-53 MP-5 Media Transport: Moving Drives and Tapes Safely
- NIST 800-53 MP-6 Media Sanitization: Proving Data Is Gone
- NIST 800-53 MP-7 Media Use: Controlling USB and Portable Storage
- NIST 800-53 MP-8 Media Downgrading: A Plain Explanation
- NIST 800-53 PE-1 Physical Protection Policy: What to Write and Keep
- NIST 800-53 PE-10 Emergency Shutoff: Power Off Safely
- NIST 800-53 PE-11 Emergency Power: UPS Basics for Auditors
- NIST 800-53 PE-12 Emergency Lighting: Exit Routes in an Outage
- NIST 800-53 PE-13 Fire Protection: Detection and Suppression Evidence
- NIST 800-53 PE-14 Environmental Controls: Temperature and Humidity
- NIST 800-53 PE-15 Water Damage Protection: Shutoff Valves
- NIST 800-53 PE-16 Delivery and Removal: Tracking Equipment In and Out
- NIST 800-53 PE-17 Alternate Work Site: Securing Remote Work
- NIST 800-53 PE-18 Location of System Components: Placement Matters
- NIST 800-53 PE-19 Information Leakage: Electromagnetic Emanations
- NIST 800-53 PE-2 Physical Access Authorizations: Lists and Reviews
- NIST 800-53 PE-20 Asset Monitoring and Tracking: Location Technology
- NIST 800-53 PE-21 Electromagnetic Pulse Protection: A Brief Guide
- NIST 800-53 PE-22 Component Marking: What to Show an Auditor
- NIST 800-53 PE-23 Facility Location: What to Show an Auditor
- NIST 800-53 PE-3 Physical Access Control: What to Show an Auditor
- NIST 800-53 PE-4 Access Control for Transmission: What to Show
- NIST 800-53 PE-5 Access Control for Output Devices: Audit Guide
- NIST 800-53 PE-6 Monitoring Physical Access: What Auditors Ask
- NIST 800-53 PE-7 Visitor Control: Withdrawn, and Where It Went
- NIST 800-53 PE-8 Visitor Access Records: What to Show an Auditor
- NIST 800-53 PE-9 Power Equipment and Cabling: Evidence Guide
- NIST 800-53 PL-1 Planning Policy and Procedures: Audit Guide
- NIST 800-53 PL-10 Baseline Selection: How to Pick and Show It
- NIST 800-53 PL-11 Baseline Tailoring: Evidence and Pitfalls
- NIST 800-53 PL-2 System Security and Privacy Plans: Audit Guide
- NIST 800-53 PL-3 System Security Plan Update: Withdrawn in Rev 5
- NIST 800-53 PL-4 Rules of Behavior: What to Show an Auditor
- NIST 800-53 PL-5 Privacy Impact Assessment: Withdrawn, Now RA-8
- NIST 800-53 PL-6 Security Activity Planning: Withdrawn, Now PL-2
- NIST 800-53 PL-7 Concept of Operations: What to Show an Auditor
- NIST 800-53 PL-8 Security and Privacy Architectures: What to Show
- NIST 800-53 PL-9 Central Management: What It Means for Controls
- NIST 800-53 PM-1 Information Security Program Plan: Audit Guide
- NIST 800-53 PM-10 Authorization Process: What to Show an Auditor
- NIST 800-53 PM-11 Mission and Business Process Definition
- NIST 800-53 PM-12 Insider Threat Program: What to Show an Auditor
- NIST 800-53 PM-13 Security and Privacy Workforce: Audit Guide
- NIST 800-53 PM-14 Testing, Training, and Monitoring: Audit Guide
- NIST 800-53 PM-15 Security and Privacy Groups and Associations
- NIST 800-53 PM-16 Threat Awareness Program: Share to Defend
- NIST 800-53 PM-17: Protecting CUI on External Systems
- NIST 800-53 PM-18 Privacy Program Plan: What It Contains
- NIST 800-53 PM-19 Privacy Program Leadership Role Explained
- NIST 800-53 PM-2: Naming Your Security Program Leader
- NIST 800-53 PM-20 Privacy Web Page: What to Publish
- NIST 800-53 PM-21 Accounting of Disclosures: What to Log
- NIST 800-53 PM-22: Keeping Personal Data Accurate
- NIST 800-53 PM-23 Data Governance Body: Who Sits on It
- NIST 800-53 PM-24 Data Integrity Board in Plain Terms
- NIST 800-53 PM-25: Keep Real PII Out of Testing
- NIST 800-53 PM-26 Complaint Management: Build the Intake
- NIST 800-53 PM-27 Privacy Reporting: What Gets Reported
- NIST 800-53 PM-28 Risk Framing: Write Down Your Assumptions
- NIST 800-53 PM-29 Risk Management Leadership Roles
- NIST 800-53 PM-3 Security and Privacy Resources in Budget
- NIST 800-53 PM-30 Supply Chain Risk Management Strategy
- NIST 800-53 PM-31 Continuous Monitoring Strategy: Metrics and Cadence
- NIST 800-53 PM-32 Purposing: Is a System Doing Its Job?
- NIST 800-53 PM-4 Plan of Action and Milestones: Track Fixes
- NIST 800-53 PM-5 System Inventory: List What You Run
- NIST 800-53 PM-6 Measures of Performance: Pick Metrics That Hold
- NIST 800-53 PM-7 Enterprise Architecture with Security in It
- NIST 800-53 PM-8 Critical Infrastructure Plan Explained
- NIST 800-53 PM-9 Risk Management Strategy: What a Plan Needs
- NIST 800-53 PS-1 Personnel Security Policy: What to Write
- NIST 800-53 PS-2 Position Risk Designation Explained
- NIST 800-53 PS-3 Personnel Screening: What to Show an Auditor
- NIST 800-53 PS-4 Personnel Termination: What to Show an Auditor
- NIST 800-53 PS-5 Personnel Transfer: Access After a Role Change
- NIST 800-53 PS-6 Access Agreements: What to Show an Auditor
- NIST 800-53 PS-7 External Personnel Security: Contractors and Vendors
- NIST 800-53 PS-8 Personnel Sanctions: A Short Evidence Guide
- NIST 800-53 PS-9 Position Descriptions: Security Roles in Job Specs
- NIST 800-53 PT-1 PII Processing Policy: What to Show an Auditor
- NIST 800-53 PT-2 Authority to Process PII: Legal Basis in Practice
- NIST 800-53 PT-3 PII Processing Purposes: Evidence Guide
- NIST 800-53 PT-4 Consent: What the Control Asks For
- NIST 800-53 PT-5 Privacy Notice: Content and Evidence for Auditors
- NIST 800-53 PT-6 System of Records Notice: Who It Applies To
- NIST 800-53 PT-7 Special Categories of PII: Sensitive Data Handling
- NIST 800-53 PT-8 Computer Matching Requirements: Federal Scope
- NIST 800-53 RA-1 Risk Assessment Policy: What to Show an Auditor
- NIST 800-53 RA-10 Threat Hunting: What an Auditor Looks For
- NIST 800-53 RA-2 Security Categorization: Rating Your Systems
- NIST 800-53 RA-3 Risk Assessment: What to Show an Auditor
- NIST 800-53 RA-5 Vulnerability Scanning: Evidence an Auditor Accepts
- NIST 800-53 RA-6 Technical Surveillance Countermeasures Survey
- NIST 800-53 RA-7 Risk Response: Mitigate, Accept, Share or Avoid
- NIST 800-53 RA-8 Privacy Impact Assessments: When and How
- NIST 800-53 RA-9 Criticality Analysis: Find What Matters Most
- NIST 800-53 SA-1 System and Services Acquisition Policy: A Guide
- NIST 800-53 SA-10 Developer Configuration Management: Proof Guide
- NIST 800-53 SA-11 Developer Testing: What to Show an Auditor
- NIST 800-53 SA-12 Supply Chain Protection: Withdrawn, Now SR
- NIST 800-53 SA-13 Trustworthiness: Withdrawn, Now in SA-8
- NIST 800-53 SA-14 Criticality Analysis: Withdrawn, Now RA-9
- NIST 800-53 SA-15 Development Process, Standards, Tools: Evidence
- NIST 800-53 SA-16 Developer-provided Training: What to Show
- NIST 800-53 SA-17 Developer Security Architecture and Design
- NIST 800-53 SA-18 Tamper Resistance and Detection: Now SR-9
- NIST 800-53 SA-19 Component Authenticity: Now SR-11
- NIST 800-53 SA-2 Allocation of Resources: What to Show
- NIST 800-53 SA-20 Customized Development of Critical Components
- NIST 800-53 SA-21 Developer Screening: What to Show an Auditor
- NIST 800-53 SA-22 Unsupported System Components: What to Show
- NIST 800-53 SA-23 Specialization: Hardening What Matters Most
- NIST 800-53 SA-24 Design for Cyber Resiliency: A Practical Read
- NIST 800-53 SA-3 System Development Life Cycle: Audit Evidence
- NIST 800-53 SA-4 Acquisition Process: What to Put in the Contract
- NIST 800-53 SA-5 System Documentation: What to Show an Auditor
- NIST 800-53 SA-6 Software Usage Restrictions: Withdrawn
- NIST 800-53 SA-7 User-installed Software: Withdrawn
- NIST 800-53 SA-8 Security Engineering Principles: Audit Evidence
- NIST 800-53 SA-9 External System Services: What to Show
- NIST 800-53 SC-1 System and Communications Protection Policy
- NIST 800-53 SC-10 Network Disconnect: What to Show an Auditor
- NIST 800-53 SC-11 Trusted Path: What It Is and What to Show
- NIST 800-53 SC-12 Cryptographic Key Management: What to Show
- NIST 800-53 SC-13 Cryptographic Protection: What to Show
- NIST 800-53 SC-14 Public Access Protections: Withdrawn, Now Where?
- NIST 800-53 SC-15 Collaborative Computing: What to Show an Auditor
- NIST 800-53 SC-16 Security and Privacy Attributes in Transit
- NIST 800-53 SC-17 PKI Certificates: Evidence an Auditor Wants
- NIST 800-53 SC-18 Mobile Code: Controlling Code That Travels
- NIST 800-53 SC-19 Voice Over IP: Withdrawn, Still Worth Checking
- NIST 800-53 SC-2 Separating User and Admin Functions: What to Show
- NIST 800-53 SC-20 Secure DNS for Authoritative Servers
- NIST 800-53 SC-21 Secure DNS for Recursive Resolvers
- NIST 800-53 SC-22 Fault Tolerant DNS Architecture
- NIST 800-53 SC-23 Session Authenticity: What to Show an Auditor
- NIST 800-53 SC-24 Fail in Known State: Designing Safe Failures
- NIST 800-53 SC-25 Thin Nodes: Keep Endpoints Small
- NIST 800-53 SC-26 Decoys: Honeypots and What Evidence Looks Like
- NIST 800-53 SC-27 Platform Independent Applications Explained
- NIST 800-53 SC-28 Protection of Information at Rest
- NIST 800-53 SC-29 Heterogeneity: Diversity Has a Cost
- NIST 800-53 SC-3 Security Function Isolation Explained
- NIST 800-53 SC-30 Concealment and Misdirection Explained
- NIST 800-53 SC-31 Covert Channel Analysis in Practice
- NIST 800-53 SC-32 System Partitioning: Segmenting Your Environment
- NIST 800-53 SC-33 Transmission Preparation Integrity: Now in SC-8
- NIST 800-53 SC-34 Non-modifiable Executable Programs
- NIST 800-53 SC-35 External Malicious Code Identification
- NIST 800-53 SC-36 Distributed Processing and Storage
- NIST 800-53 SC-37 Out of Band Channels: What to Show
- NIST 800-53 SC-38 Operations Security (OPSEC) Explained
- NIST 800-53 SC-39 Process Isolation: What to Show an Auditor
- NIST 800-53 SC-4 Information in Shared System Resources
- NIST 800-53 SC-40 Wireless Link Protection: What to Show an Auditor
- NIST 800-53 SC-41 Port and I/O Device Access: What to Show an Auditor
- NIST 800-53 SC-42 Sensor Capability and Data: Phones and Cameras
- NIST 800-53 SC-43 Usage Restrictions: What to Show an Auditor
- NIST 800-53 SC-44 Detonation Chambers: Sandboxing Suspicious Files
- NIST 800-53 SC-45 System Time Synchronization: What to Show
- NIST 800-53 SC-46 Cross Domain Policy Enforcement Explained
- NIST 800-53 SC-47 Alternate Communications Paths for Operations
- NIST 800-53 SC-48 Sensor Relocation: Moving Your Monitoring
- NIST 800-53 SC-49 Hardware-enforced Separation and Policy Enforcement
- NIST 800-53 SC-5 Denial-of-service Protection: What to Show
- NIST 800-53 SC-50 Software-enforced Separation and Policy Enforcement
- NIST 800-53 SC-51 Hardware-based Protection of Firmware
- NIST 800-53 SC-6 Resource Availability: Priorities and Quotas
- NIST 800-53 SC-7 Boundary Protection: What to Show an Auditor
- NIST 800-53 SC-8 Transmission Confidentiality and Integrity
- NIST 800-53 SC-9 Transmission Confidentiality: Withdrawn, Use SC-8
- NIST 800-53 SI-1 System and Information Integrity Policy: Evidence
- NIST 800-53 SI-10 Information Input Validation: What to Show
- NIST 800-53 SI-11 Error Handling: What to Show an Auditor
- NIST 800-53 SI-12 Information Management and Retention Explained
- NIST 800-53 SI-13 Predictable Failure Prevention Explained
- NIST 800-53 SI-14 Non-persistence: Short Lived Systems as Security
- NIST 800-53 SI-15 Information Output Filtering: What to Show
- NIST 800-53 SI-16 Memory Protection: DEP and ASLR as Evidence
- NIST 800-53 SI-17 Fail-safe Procedures: What to Show an Auditor
- NIST 800-53 SI-18 PII Quality Operations: What to Show an Auditor
- NIST 800-53 SI-19 De-identification: Evidence and Common Gaps
- NIST 800-53 SI-2 Flaw Remediation: What to Show an Auditor
- NIST 800-53 SI-20 Tainting: Planting Data to Catch Exfiltration
- NIST 800-53 SI-21 Information Refresh: Evidence for Auditors
- NIST 800-53 SI-22 Information Diversity: A Practical Reading
- NIST 800-53 SI-23 Information Fragmentation Explained
- NIST 800-53 SI-3 Malicious Code Protection: Evidence Guide
- NIST 800-53 SI-4 System Monitoring: What to Show an Auditor
- NIST 800-53 SI-5 Security Alerts and Advisories: Evidence
- NIST 800-53 SI-6 Security Function Verification Evidence
- NIST 800-53 SI-7 Software and Information Integrity: Evidence
- NIST 800-53 SI-8 Spam Protection: What to Show an Auditor
- NIST 800-53 SR-1 SCRM Policy and Procedures: What to Show
- NIST 800-53 SR-10 Inspection of Components: What It Asks
- NIST 800-53 SR-11 Component Authenticity: Counterfeit Controls
- NIST 800-53 SR-12 Component Disposal: Evidence and Gaps
- NIST 800-53 SR-2 SCRM Plan: What to Show an Auditor
- NIST 800-53 SR-3 Supply Chain Controls and Processes: Evidence
- NIST 800-53 SR-4 Provenance: What to Show an Auditor
- NIST 800-53 SR-5 Acquisition Strategies: What to Show an Auditor
- NIST 800-53 SR-6 Supplier Assessments and Reviews: Evidence
- NIST 800-53 SR-7 Supply Chain OPSEC: What It Means for You
- NIST 800-53 SR-8 Notification Agreements and Supplier Contracts
- NIST 800-53 SR-9 Tamper Resistance and Detection: Evidence
Frequently asked questions
Who are these guides for?
Security engineers, developers and compliance leads who need a plain explanation of each entry and what to do about it.
Are these official documents?
No. They are explanatory guides written by Safeguard from the public source. Always check the original source for the authoritative text.
Last reviewed: 19 October 2026.