Kimova AI ISO 27001 Auditing Series Organization Control A.5.28 Collection of Evidence

Created in September 05, 2024

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Understand ISO 27001 Organization Control A.5.28 Collection of Evidence with [Kimova AI](https://kimova.ai)

In today’s article, we will cover Control A.5.28: Collection of Evidence, which is crucial for responding to security incidents and ensuring that the evidence collected can be used for further investigation, legal purposes, or internal analysis.

Control A.5.28: Collection of Evidence

When an information security incident occurs, proper evidence collection is critical. This control ensures that the evidence collected is handled correctly to preserve its integrity and make it useful for incident investigation, legal proceedings, or future security assessments.

Key Aspects of Control A.5.28

  1. Identifying Relevant Evidence
    • Explanation: The first step is to identify what evidence is relevant to the security incident.
    • Example: In the case of a data breach, relevant evidence could include system logs, access records, and emails exchanged during the time of the breach.
  2. Ensuring Integrity of Evidence
    • Explanation: Evidence must be collected and handled in such a way that it cannot be tampered with or altered.
    • Example: Using cryptographic hash functions to verify the integrity of log files ensures that they haven’t been modified after collection.
  3. Documenting the Chain of Custody
    • Explanation: For evidence to be admissible in a legal investigation, it’s important to document the chain of custody.
    • Example: Recording who accessed the evidence, when it was collected, and how it was transferred can be crucial if the incident leads to a court case.
  4. Ensuring Legal Compliance
    • Explanation: The process of collecting and storing evidence must comply with legal and regulatory requirements.
    • Example: If the organization operates in the EU, it must ensure that the evidence collection complies with the GDPR, especially if personal data is involved.

Practical Example of Implementing A.5.28

Consider a scenario where a company faces a ransomware attack. To comply with A.5.28, the organization might:

  • Identify Relevant Evidence: Gather network traffic logs, file access logs, and screenshots of ransom notes.
  • Ensure Integrity: Secure this evidence by creating digital signatures or hash values to ensure it hasn’t been altered.
  • Document the Chain of Custody: Record every interaction with the evidence, including who collected it, when, and how it was stored.
  • Ensure Legal Compliance: Work with legal teams to ensure that the evidence collection and handling process aligns with relevant regulations.

Why This Control Is Important

Having a structured approach to evidence collection ensures that your organization can properly investigate incidents and respond effectively. It also helps in legal and compliance situations where evidence might be needed to prove compliance or innocence.

Conclusion

Control A.5.28 underscores the importance of thorough and methodical evidence collection during an incident. Ensuring the integrity and proper handling of evidence is key to successfully managing security incidents and preparing for any legal or regulatory follow-ups.

Our next article will explore Control A.5.29: Information Security During Disruption. Stay tuned for more detailed breakdowns fromKimova AI’s ISO 27001 Auditing Series.

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