What is considered a corrective control for a compromised system?

The correct approach as a corrective control for a compromised system is to patch the vulnerability that allowed the compromise to occur. This action directly addresses the root cause of the breach, effectively mitigating the risk of future incidents related to the same vulnerability. By applying the necessary patches, organizations can close off the pathways that attackers exploited, thus restoring the system’s security posture.

The focus of corrective controls is on reducing or eliminating the factors that contributed to an incident, ensuring that similar issues do not reoccur. In this context, patching is a proactive measure taken after identifying a weakness, which plays a crucial role in the overall incident response and recovery process.

Other methods mentioned, while important, serve different purposes. Reimaging the system can restore it to a known good state but does not address the underlying vulnerability. Implementing stricter access controls and enforcing multi-factor authentication enhance security protocols but do not specifically correct or remediate the existing vulnerabilities that initially allowed the compromise to happen. Thus, patching stands out as the most effective corrective action in directly fixing the security issues in a compromised system.