ISO 27001 Control Of Removable Media Usage (Annex A 7.10)

Introduction

Control of Removable Media Usage is a key control under ISO 27001:2022 Annex A.7.10, focused on managing the risks associated with removable media such as USB drives, external hard disks, and other portable storage devices. These media types are common sources of data leakage, malware introduction, and unauthorized data transfer, making them a significant security concern.

This control ensures that organizations implement strict policies and technical safeguards to regulate, monitor, and restrict the use of removable media, thereby protecting sensitive information and maintaining system integrity.

What This Control Is About (Basic Information)

Comply Agent shows the following control details:

• Title: Control of Removable Media Usage
• Control ID: UC-ME-248
• Category: Media Protection
• Subcategory: Removable Media Security
• Version: v1.0

Objective

To prevent unauthorized data exfiltration and system compromise by controlling and monitoring the use of removable media across the organization.

Implementation & Guidance

Comply Agent shows that organizations must establish a structured approach to controlling removable media usage through policy, technical controls, and monitoring.

1. Develop Removable Media Policy

Organizations must:

• Define acceptable use of removable media
• Specify approved devices and encryption requirements
• Establish restrictions for unauthorized devices

This ensures clear governance over how removable media is used.

2. Enforce Technical Controls

Organizations should implement:

• USB port control (enable/disable policies)
• Endpoint security tools (EDR/DLP solutions)
• Device control mechanisms

These controls restrict unauthorized media access and reduce exposure to threats.

3. Monitor and Log Usage

Comply Agent shows that monitoring is critical:

• Track all removable media connections
• Log user activity and data transfers
• Identify suspicious or unauthorized usage

Monitoring ensures visibility and supports incident investigation.

4. User Awareness and Training

Organizations must:

• Train employees on acceptable media usage
• Communicate risks of removable media
• Ensure compliance with security policies

Human awareness is essential to prevent misuse.

5. Maintain Approved Media Inventory

Organizations should:

• Maintain records of authorized devices and users
• Track issued media and usage history
• Ensure accountability and traceability

Evidence Examples

Comply Agent shows:

• Removable media acceptable use policy document
• Logs from DLP solutions showing monitored or blocked activity
• Inventory of approved removable media devices and users

Operational Details

Comply Agent shows the execution of this control:

• Frequency: Monthly
• Review Cycle: Monthly
• Owner Role: IT Manager
• Responsible Role: IT Manager
• Automation Score: 60%
• Last Updated: As per system records

The 60% automation score indicates moderate reliance on:

• Endpoint security tools
• Logging and monitoring systems
• Policy enforcement mechanisms

Compliance & Risk Management

Comply Agent shows the following compliance attributes:

• Status: Not Started
• Compliance Status: N/A
• Control Type: Administrative
• Maturity Level: Level 4
• Risk Domain: Data Protection and System Integrity
• Clause Reference: ISO 27001:2022 A.7.10

Key Risks Addressed

• Unauthorized data transfer via USB devices
• Malware introduction through removable media
• Data exfiltration and leakage
• Loss of control over sensitive information

Even though Comply Agent shows “Not Started”, the maturity level indicates that control structures are defined and ready for implementation.

Framework Mappings

Comply Agent shows cross-framework alignment:

1. Primary Mapping

• ISO 27001:2022 – A.7.10 Control of Removable Media Usage (Exact)

2. Supporting Frameworks

• NIST SP 800-53
  • MP-7 – Media Use
• SOC 2
  • CC6.6 – Logical and physical access controls
• GDPR
  • Article 32 – Security of processing
• NIST CSF
  • PR.PS-06 – Data protection processes
  • PR.DS-01 – Data-at-rest protection

3. Extended Mappings

Comply Agent shows:

• DORA
  • Article 4 – ICT risk management
  • Article 13 – Data protection
• SOC 2 (Extended)
  • CC6.1 – Logical access security
  • CC6.6 – Access control enforcement

Evidence Library

Comply Agent shows the following audit evidence:

1. Policy Document

Removable Media Use Policy defining acceptable use, restrictions, and security requirements.

2. Configuration Logs (Auto-collected)

Endpoint security logs showing enforcement of removable media controls such as USB blocking.
Source: Endpoint Detection and Response (EDR) systems

3. Audit Logs (Auto-collected)

Logs of authorized removable media usage, including user activity and access records.
Source: Data Loss Prevention (DLP) systems

4. User Training Records

Records demonstrating employee training on acceptable use and risks associated with removable media.

This evidence ensures:

• Enforcement of removable media policies
• Monitoring and traceability of device usage
• User awareness and compliance
• Audit readiness for ISO certification

FAQs: ISO 27001 Control Of Removable Media Usage (Annex A 7.10)

1. What is removable media in ISO 27001?

Removable media refers to portable storage devices like USB drives, external hard disks, and memory cards. These devices pose risks if not properly controlled and monitored.

2. Why is control of removable media important?

It helps prevent data breaches, malware infections, and unauthorized data transfers. Without proper controls, removable media can bypass traditional network security measures.

3. What evidence is required for audits?

Auditors expect policies, configuration logs, usage logs, and training records. These demonstrate that removable media usage is controlled and monitored effectively.

4. Who is responsible for this control?

Comply Agent shows the IT Manager as responsible for implementation and monitoring. This ensures accountability for enforcing removable media controls.

5. How often should removable media controls be reviewed?

Comply Agent shows a monthly review cycle, ensuring continuous monitoring and timely updates to controls.

6. What tools help implement this control?

Endpoint security tools, DLP solutions, and device control software are commonly used. These tools help enforce policies and monitor removable media usage.