What should be included in external vulnerability disclosure responses?

Including evaluation and mitigation of vulnerabilities in external vulnerability disclosure responses is crucial for several reasons. Firstly, it demonstrates accountability and transparency to the individuals or organizations who have discovered the vulnerabilities. By providing detailed analysis and steps taken to address these vulnerabilities, the organization establishes trust with its stakeholders and the broader community.

This response should encompass not only an acknowledgment of the vulnerability itself but also a clear outline of how the organization plans to mitigate the issue. This might include immediate actions taken to remediate the vulnerability, as well as longer-term strategies to prevent future occurrences. It reflects a proactive stance towards cybersecurity, showing that the organization is not only reactive but also committed to enhancing its security posture.

In contrast, while client feedback can be valuable for improving services, it doesn't directly address the vulnerabilities disclosed. User training materials and marketing strategies are unrelated to the core purpose of vulnerability disclosure responses, which focus on security issues. Thus, focusing on the evaluation and mitigation of vulnerabilities is the most relevant and responsible approach in such circumstances.