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03.15.03Rules of behaviourITSP.10.171Planning

Official Requirement

A. Establish, rules that describe the responsibilities and expected behaviour for system usage and protecting specified information. B. Provide rules to individuals who require access to the system. C. Receive a documented acknowledgement from individuals indicating that they have read, understand, and agree to abide by the rules of behaviour before authorizing access to specified information and the system. D. Review and update the rules of behaviour [Assignment: organization-defined frequency].

Source: Canadian Centre for Cyber Security ITSP.10.171 (2025), adapted from NIST SP 800-171 Rev. 3

In Plain English

Your organization must define rules of behaviour that explain user responsibilities and expected conduct when using systems that process sensitive information. Every user must receive these rules, acknowledge them in writing before getting access, and the rules must be reviewed and updated regularly.

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The Trust Services Criteria referenced in this tool are published by the American Institute of Certified Public Accountants (AICPA) and incorporate principles from the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Criteria descriptions are reproduced for reference purposes. All implementation guidance, evidence recommendations, and control language are original work by Truvo Cyber. ISO 27001 and ISO 42001 are standards published by the International Organization for Standardization (ISO). Framework and standard names are the property of their respective owners. This tool is not affiliated with, endorsed by, or certified by AICPA, COSO, or ISO.

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On-premises implementation and evidence

Rules of behaviour management

Implementation steps

  1. Create rules of behaviour document covering acceptable use, data handling, reporting obligations, and consequences for violations
  2. Distribute rules of behaviour to all personnel and contractors before granting system access
  3. Collect signed acknowledgement forms from all users confirming they have read, understood, and agree to the rules
  4. Review and update rules of behaviour at the defined frequency and recollect acknowledgements when rules change significantly

Tools / systems

Evidence artifacts

Evidence frequency: Per-event acknowledgement at onboarding; annual review and update; re-acknowledgement upon significant changes