The PRIMARY objective of a post-incident review of an information security incident is to:

post-incident review of an information security incident is a process that aims to identify the root causes, contributing factors, and lessons learned from the incident, and to implement corrective and preventive actions to avoid or mitigate similar incidents in the future. The primary objective of a post-incident review is to prevent recurrence, as it helps to improve the security posture, awareness, and resilience of the organization. Preventing recurrence also helps to reduce the impact and cost of future incidents, as well as to enhance the reputation and trust of the organization. Updating the risk profile, minimizing impact, and determining the impact are not the primary objectives of a post-incident review, although they may be part of its outcomes or outputs. References = CISM Review Manual, 16th Edition, page 1011