Regulatory requirements should be the primary basis for deciding whether to disclose information related to risk events that impact external stakeholders, because they define the rules or standards that the organization must comply with to meet the expectations of the regulators, such as government agencies or industry bodies, and to avoid legal or reputational consequences. A risk event is an occurrence or incident that may cause harm or damage to the organization or its objectives, such as a natural disaster, a cyberattack, or a human error. An external stakeholder is a person or group that has an interest or influence in the organization or its activities, but is not part of the organization, such as customers, suppliers, partners, investors, or regulators. Disclosing information related to risk events that impact external stakeholders is a process of communicating or reporting the relevant facts or details of the risk events to the affected or interested parties. Disclosing information related to risk events may have benefits, such as maintaining trust, transparency, and accountability, but it may also have drawbacks, such as exposing vulnerabilities, losing competitive advantage, or inviting litigation. Therefore, regulatory requirements should be the primary basis for deciding whether to disclose information, as they provide the legal and ethical obligations and boundaries for the disclosure process. Stakeholder preferences, contractual requirements, and management assertions are all possible factors for deciding whether to disclose information related to risk events, but they are not the primary basis, as they may vary or conflict depending on the situation or context, and may not override the regulatory requirements. References = Risk and Information Systems Control Study Manual, Chapter 4, Section 4.3.2, page 158