How to Implement ISO 27001 Annex A 6.4

Implementing ISO 27001 Annex A 6.4 is a formal governance requirement establishing a structured, communicated disciplinary process for security violations to ensure consequences are consistent and legally defensible. This control connects policy to employment contracts, providing the business benefit of deterrence against malicious behavior and robust legal protection during enforcement actions.

ISO 27001 Annex A Disciplinary Process Implementation Checklist

Use this implementation checklist to achieve compliance with ISO 27001 Annex A 6.4. This control mandates a formal, graduated, and communicated process for taking action against employees and contractors who commit information security breaches, ensuring that policy violations have tangible consequences.

1. Link Discipline Directly to Employment Contracts

Control Requirement: Ensure the legal basis for disciplinary action is established prior to any incident. Required Implementation Step: Review standard employment contracts and the Employee Handbook. Insert a specific clause stating that “Violation of Information Security Policies (including data theft, password sharing, and unauthorised access) constitutes misconduct or gross misconduct.” Without this contractual link, enforcing dismissal for a security breach is legally hazardous.

Minimum Requirement: Signed contracts explicitly referencing the ISMS policies as a condition of employment.

2. Define ‘Security Gross Misconduct’

Control Requirement: Distinguish between accidental error and malicious/negligent behaviour. Required Implementation Step: Update the Disciplinary Policy to list specific security examples of Gross Misconduct (immediate dismissal). This list should include: disabling antivirus/EDR, intentional data exfiltration, installing pirate software, and sharing credentials with external parties.

Minimum Requirement: A published list of “Zero Tolerance” security behaviours.

3. Establish a Forensic Investigation Protocol

Control Requirement: Ensure evidence used in disciplinary hearings is accurate and admissible. Required Implementation Step: Create a “Preservation of Evidence” procedure for HR and IT. When a breach is suspected, IT must not “poke around” and alter timestamps. They must capture immutable logs, take disk images if necessary, and maintain a Chain of Custody to prove the employee committed the act.

Minimum Requirement: A documented procedure for securing digital evidence before a disciplinary hearing begins.

4. Create a Graduated Sanction Matrix

Control Requirement: Ensure the punishment fits the crime and is applied consistently. Required Implementation Step: Develop a matrix guiding HR on sanctions. For example: Unlocked screen = Verbal Warning; Phishing Failure (Repeat) = Written Warning; Data Leak = Final Written Warning or Dismissal. This removes subjectivity and accusations of bias.

Minimum Requirement: A “Security Sanctions Matrix” approved by Legal and HR.

5. Enforce Immediate Access Suspension

Control Requirement: Prevent further damage during the investigation. Required Implementation Step: Configure a “Suspension Workflow” in your Identity Provider (Okta/AD). If an employee is under investigation for a serious security breach, their accounts must be disabled (not deleted) immediately before they are notified of the meeting, to prevent revenge data deletion.

Minimum Requirement: Documented ability to revoke access within 15 minutes of an HR trigger.

6. Mandate HR and Security Collaboration

Control Requirement: Ensure technical facts are understood by non-technical adjudicators. Required Implementation Step: Formalise the role of the CISO or Security Lead in disciplinary hearings. Their role is to present the technical facts (e.g., “The logs prove the user bypassed the proxy”) to HR, ensuring the decision is based on reality, not the employee’s technical obfuscation.

Minimum Requirement: Meeting minutes showing Security representation in breach-related disciplinary hearings.

7. Clarify Contractor and Third-Party Penalties

Control Requirement: Apply disciplinary logic to non-employees. Required Implementation Step: Update Supplier and Contractor agreements. Define the process for “Removing a Representative”. If a contractor breaches security, you cannot “fire” them in the employment sense, but you must have the contractual right to terminate their specific access and demand a replacement immediately without penalty.

Minimum Requirement: “Right to Remove” clauses in all third-party access contracts.

8. Implement ‘Fair Process’ Safeguards

Control Requirement: Protect the organisation against wrongful dismissal claims. Required Implementation Step: Ensure the process includes a right to appeal and a right to review the digital evidence. The accused employee must be shown the log data (redacted if necessary) supporting the claim. Secret evidence creates legal liability.

Minimum Requirement: Evidence that the accused was given the opportunity to refute the technical findings.

9. Document the Decision Logic

Control Requirement: Maintain an audit trail of the disciplinary outcome. Required Implementation Step: Retain a secure file linking the Incident Report (the breach) to the Disciplinary Outcome (the punishment). If an auditor asks, “What did you do about the data leak in May?”, you must show the chain from detection to the final warning issued.

Minimum Requirement: A cross-referenced log of Security Incidents vs. HR Disciplinary Records.

10. Communicate Redacted Outcomes (Deterrence)

Control Requirement: Use the process to deter future non-compliance. Required Implementation Step: Without naming names, communicate the consequences of breaches to the wider staff. E.g., “Last month, an individual was dismissed for transferring company data to a personal USB drive.” This turns a private HR matter into a powerful cultural reinforcement.

Minimum Requirement: Periodic “Security Updates” to staff that mention enforcement actions taken.

ISO 27001 Annex A 6.4 SaaS / GRC Platform Implementation Failure Checklist

The gap between GRC dashboard compliance and technical reality for Control 6.4.
Control Requirement The ‘Checkbox Compliance’ Trap The Reality Check
Policy Definition Uploading a generic “Disciplinary Policy” template. If the policy doesn’t mention “Security” or “Data”, it’s useless. Standard HR policies often fail to cover digital misconduct.
Forensics HR printing out an email as “proof”. Emails can be spoofed. Without server logs and headers preserved by IT, your “proof” will collapse in a tribunal.
Access Suspension Assumed to happen “naturally”. In reality, the fired employee often retains access for hours because HR forgot to tell IT. Automated triggers are essential.
Fairness “Zero Tolerance” slogans on posters. Strict Zero Tolerance is legally fragile. You need a process that considers intent and history, not just slogans.
Contractors Applying employee policies to contractors. You cannot “discipline” a contractor (that implies employment). You must manage them via the commercial contract terms.
Evidence Relying on hearsay or “he said/she said”. Digital breaches leave digital footprints. If you don’t use the logs, you are guessing.
Consistency punishing juniors but letting executives off. This is a major ISO non-conformity. If the CEO shares passwords and isn’t warned, the process is void.

About the author

Stuart Barker
🎓 MSc Security 🛡️ Lead Auditor 30+ Years Exp 🏢 Ex-GE Leader

Stuart Barker

ISO 27001 Ninja

Stuart Barker is a veteran practitioner with over 30 years of experience in systems security and risk management. Holding an MSc in Software and Systems Security, he combines academic rigor with extensive operational experience, including a decade leading Data Governance for General Electric (GE).

As a qualified ISO 27001 Lead Auditor, Stuart possesses distinct insight into the specific evidence standards required by certification bodies. His toolkits represent an auditor-verified methodology designed to minimise operational friction while guaranteeing compliance.

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