정답: A
The primary objective of the post-incident phase of the incident response process in the security operations center (SOC) is to improve the IR process. The incident response (IR) process is a set of activities that aims to detect, contain, analyze, eradicate, and recover from security incidents, and to prevent or minimize the impact and damage of the incidents. The IR process consists of six phases: preparation, identification, containment, analysis, eradication, and recovery. The post- incident phase is the last phase of the IR process, and it focuses on learning from the incident and improving the IR process for the future. The post-incident phase involves tasks such as:
Reviewing and documenting the incident, including the cause, impact, response, and lessons learned Evaluating and updating the IR plan, policies, procedures, and tools, based on the feedback and recommendations from the incident Conducting a post-incident review or debriefing with the IR team and the stakeholders, to share the findings, results, and best practices from the incident Implementing the corrective and preventive actions, such as patching the vulnerabilities, restoring the systems, or enhancing the security controls, to prevent or mitigate the recurrence of the incident Providing the training and awareness, such as conducting the exercises, simulations, or workshops, to improve the skills and knowledge of the IR team and the organization.
