A risk register is a document that contains information about potential cybersecurity risks that could threaten a project’s success, or even the business itself2. Therefore, it is important to protect the confidentiality and integrity of the risk register from unauthorized or inappropriate access, modification, or disclosure. One way to do this is to implement role-based access, which is a method of restricting access to the risk register based on the roles or responsibilities of the users1. This way, only authorized users who need to view or edit the risk register for legitimate purposes can do so, and the access rights can be revoked or modified as needed. This would most effectively reduce the potential for inappropriate exposure of vulnerabilities documented in the risk register. The other options are not as effective or feasible as option C, as they do not address the need to balance the security and availability of the risk register. Option A, limiting access to senior management only, would compromise the availability and usefulness of the risk register, as other stakeholders such as project managers, risk owners, or auditors may need to access therisk register for risk identification, analysis, response, or monitoring purposes3. Option B, encrypting the risk register, would enhance the security of the risk register, but it would not prevent authorized users from exposing the vulnerabilities to unauthorized parties, either intentionally or unintentionally. Encryption also adds complexity and cost to the risk register management process, and may affect the performance or usability of the risk register4. Option D, requiring users to sign a confidentiality agreement, would rely on the compliance and ethics of the users, but it would not prevent or detect any breaches of the agreement. A confidentiality agreement also does not specify the access rights or roles of the users, and may not be legally enforceable in some cases5.
