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Organisational controls
ISO 27001A.5.10

ISO 27001 Annex A 5.10 Acceptable use policies for information and assets

What it says

Rules for the acceptable use and procedures for handling information and other associated assets shall be identified, documented and implemented.

Quoted as published. Everything else on this page is written by Control Stack.

What it means

In plain English

Create and communicate rules for how information and assets should be used to ensure security.

This control is about setting clear rules on how everyone in the organisation should use information and company resources, like computers and data. It's important because if people misuse these resources, it can lead to data breaches or loss, which can be costly and damaging to the organisation's reputation.

Why it matters

Without acceptable use rules, staff may mishandle information or assets, causing data leakage, malware infection, and regulatory or reputational damage.

How to implement

  1. The IT manager should develop an acceptable use policy that clearly outlines what is considered appropriate and inappropriate use of information and equipment.

    This can be done by listing specific do's and don'ts and aligning them with security guidelines from ISO 27002:2022.

  2. HR should ensure that all employees and external partners are aware of the acceptable use policy.

    This involves including these guidelines in the onboarding process and having employees sign off that they understand the policy.

  3. The IT department should set up monitoring systems to track adherence to the acceptable use policy.

    This can be done by using log files and alerts that indicate unusual access or misuse of assets to help identify potential security threats.

  4. Management should regularly review and update the acceptable use policy to ensure it remains relevant.

    This might involve consulting with IT and compliance specialists to incorporate changes in the regulatory landscape like updates from the Privacy Act 1988.

  5. The IT manager should implement a clear procedure for handling violations of the acceptable use policy.

    This could include disciplinary actions or additional training sessions to prevent future breaches.

Keep it running

Review and train on acceptable use for email, internet, cloud apps, BYOD and remote work; define prohibited actions, monitoring, and sanctions.

Evidence and audit

  1. Check 1 of 5What an auditor asks for

    Ask for

    Request a copy of the acceptable use policy document.

    Look at

    Check that the policy clearly outlines acceptable and unacceptable behaviours and includes procedures for handling breaches.

    Good evidence

    The policy is comprehensive, clearly communicated, signed by employees, and includes regular updates that align with current regulations.

  2. Check 2 of 5What an auditor asks for

    Ask for

    Ask to see records of employee acknowledgements of the acceptable use policy.

    Look at

    Ensure acknowledgements are signed and dated by all employees and any external partners with access.

    Good evidence

    All employees and relevant partners have signed acknowledgments within an appropriate timeframe after policy updates.

  3. Check 3 of 5What an auditor asks for

    Ask for

    Request evidence of monitoring activities related to policy compliance.

    Look at

    Check for logs or reports that show how IT monitors for policy compliance and any incidents of misuse.

    Good evidence

    There are consistent and thorough monitoring processes in place, with incidents being recorded and dealt with promptly.

  4. Check 4 of 5What an auditor asks for

    Ask for

    Inquire about the training materials or sessions that cover the acceptable use policy.

    Look at

    Verify that the training content explicitly covers the acceptable use policy and includes scenarios or examples.

    Good evidence

    Training is comprehensive, up-to-date, and participation is well-documented.

  5. Check 5 of 5What an auditor asks for

    Ask for

    Ask for records of any incidents and how they were addressed with respect to the acceptable use policy.

    Look at

    Look for documentation showing the response to policy violations, including any remediation steps taken.

    Good evidence

    Incidents are documented clearly with actions taken, showing a proactive approach to handling breaches and policy reinforcement.

Mappings

Closest match in ASD Information Security Manual: ISM-0161, Ensure security of unused IT equipment and media, which this control covers in full and more.

ISO 42001

ISO/IEC 42001: 5 mappings

ASD ISM

ASD Information Security Manual: 29 mappings

Mappings show how controls relate across frameworks. They do not imply full equivalence or certification.

Get help with this control

ISO 27001 training

Mindset Cyber runs PECB-accredited ISO/IEC 27001 training that maps directly to the controls in this library.

PolicyMint

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