ISO 27001 Labelling Of Information (Annex A 5.13)

Introduction

Labelling of information is a critical control under ISO 27001:2022 Annex A 5.13, ensuring that information assets are clearly classified and handled according to their sensitivity and criticality. Without proper labelling, organizations risk exposing sensitive data, mismanaging information, and failing to enforce appropriate security controls.

This control ensures that information is consistently labelled across systems, documents, and storage media so that users understand how to handle, share, store, and protect it. Proper implementation supports data protection, regulatory compliance, and operational clarity, especially in environments where information flows across multiple systems and teams.

What This Control Is About (Basic Information)

Comply Agent shows the following core attributes:

• Title: Labelling of Information
• Control ID: UC-DA-013
• Category: Data Protection
• Subcategory: Information Classification and Handling
• Version: v1.0

The control requires organizations to develop and implement procedures for information labelling and handling, ensuring consistent classification across all data types.

Objective:
To ensure that all organizational information is appropriately classified, labelled, and handled according to its sensitivity and criticality to prevent unauthorized access, disclosure, modification, or destruction.

This includes:

• Assigning classification levels (e.g., Public, Internal, Confidential, Restricted)
• Applying labels consistently across documents, systems, and media
• Ensuring handling procedures align with classification levels
• Defining roles and responsibilities for information owners and custodians

Implementation & Guidance

Comply Agent shows that organizations must establish structured classification and labelling practices supported by handling procedures and training.

Key Implementation Areas

1. Define Classification Levels

Organizations must define clear classification levels such as:

• Public
• Internal
• Confidential
• Restricted

These levels should be based on data sensitivity, regulatory requirements, and business impact.

2. Labelling Standards and Guidelines

Comply Agent shows the need to establish clear guidelines for assigning classification labels.

This includes:

• Standard label formats for documents and systems
• Visual indicators (headers, footers, tags, metadata)
• Consistent labelling across all platforms

3. Information Handling Procedures

Organizations must define how information is handled based on classification, including:

• Storage requirements
• Transmission controls
• Access restrictions
• Disposal processes

This ensures that labelling is not just visual but directly tied to security controls and operational practices.

4. Information Classification Register

Comply Agent shows that organizations should maintain an inventory or register of classified information.

This register should include:

• Information assets
• Classification levels
• Owners and custodians
• Handling requirements

5. Training and Awareness

Employees must be trained on:

• Classification levels and meaning
• Labelling procedures
• Handling requirements based on labels

Regular training ensures consistent application across the organization.

Evidence Examples

Comply Agent shows:

• Information Labelling and Handling Policy document
• Information classification register or inventory
• Training records on information handling procedures

Operational Details

Comply Agent shows the operational execution of this control:

• Frequency: Quarterly
• Review Cycle: Quarterly
• Owner Role: Data Protection Officer
• Responsible Role: Data Protection Officer
• Automation Score: 40%
• Last Updated: 18 March 2026

This indicates that labelling controls are actively reviewed and maintained more frequently than annual controls, reflecting their operational importance.

The 40% automation score suggests:

• Partial automation in classification tools or systems
• Manual governance for policy enforcement
• System-supported monitoring and evidence collection

Compliance & Risk Management

Comply Agent shows the following:

• Status: Not Started
• Compliance Status: N/A
• Control Type: Administrative
• Maturity Level: Level 4
• Risk Domain: Information Security Governance
• Clause Reference: ISO 27001:2022 A.5.13

This control is an Administrative Control, focusing on governance, structured processes, and defined responsibilities.

Key Risks Addressed

• Misclassification of sensitive data
• Unauthorized access due to improper labelling
• Data leakage and regulatory violations
• Inconsistent handling of information

Although Comply Agent shows “Not Started”, the maturity level indicates a well-defined and structured control ready for deployment.

Framework Mappings

Comply Agent shows strong cross-framework alignment:

1. Primary Mapping

• ISO 27001:2022 – Annex A 5.13 (Exact Match)

2. Supporting Frameworks

• SOC 2 – CC11 (Partial)
• GDPR – Article 32 (Related)

3. Extended Mappings

Comply Agent shows:

• DORA
• Article 10
• Article 11
• ISO 27001 (Extended Controls)
• A.5.9
• A.5.10
• A.5.12
• NIST CSF
• PR.IP-1
• PR.DS-4
• PR.DS-5

This demonstrates that information labelling supports data protection, access control, and governance requirements across multiple frameworks.

Evidence Library

Comply Agent shows four key evidence categories:

1. Policy Document

• Information Classification and Labelling Policy

2. Screenshot

• Examples of labelled documents and systems

3. Report

• Compliance reports on labelling standards adherence

4. Meeting Minutes

• Records of training sessions on classification and labelling

This evidence ensures:

• Policy-level compliance (defined standards)
• Operational validation (labelled systems and documents)
• Monitoring and reporting (compliance tracking)
• Awareness and training proof (meeting minutes)

FAQs: ISO 27001 Labelling Of Information (Annex A 5.13) 

1. What is ISO 27001 Labelling of Information?

It is a control that ensures all organizational information is classified and labelled according to its sensitivity and importance. This helps users understand how to handle information securely and consistently across systems and processes.

2. What is the objective of Annex A 5.13?

The objective is to ensure that information is appropriately classified, labelled, and handled based on its sensitivity and criticality. This reduces the risk of unauthorized access, data leakage, and improper handling.

3. What types of labels should organizations use?

Organizations typically use classification levels such as Public, Internal, Confidential, and Restricted. These labels must be clearly defined and consistently applied across documents, systems, and communication channels.

4. What evidence is required for ISO 27001 audits?

Auditors expect to see policies, labelled documents or systems, compliance reports, and training records. These demonstrate that classification and labelling practices are both defined and actively implemented.

5. Who is responsible for this control?

Comply Agent shows the Data Protection Officer as the owner and responsible role. This ensures that classification and labelling align with data protection and governance requirements.

6. How often should labelling controls be reviewed?

Comply Agent shows a quarterly review cycle, which helps ensure that classification practices remain accurate, updated, and aligned with changing business and regulatory requirements.