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SOC 247
ITSP.10.17198
ISO 42001soon
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33 controls

CC2.3External communication regarding matters affecting internal controlSOC 2Communication and Information

Official Requirement

COSO Principle 15: The entity communicates with external parties regarding matters affecting the functioning of internal control.

Source: AICPA Trust Services Criteria (2017), incorporating COSO principles

In Plain English

When something relevant to security happens, a breach, a change in your privacy commitments, a material change in your service, you have a process to communicate that to customers, regulators, and other external parties. Your public-facing documents (privacy policy, terms of service, system description) must be accurate and current. Auditors will check whether your published commitments match your actual controls.

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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

Published privacy policy, terms of service, and security commitments

Implementation steps

  1. Maintain a published Privacy Policy and Terms of Service that accurately reflect current data handling practices
  2. Publish a network and infrastructure architecture overview or system description, this is required for your SOC 2 report and supports customer due diligence requests
  3. When customers request security questionnaires or due diligence documents, route them through a defined process that ensures accuracy and version control

Tools / systems

Evidence artifacts

Evidence frequency: Annual review; per-incident external notification documentation