What action should a security analyst take when an incident in the Microsoft Defender XDR portal has the status "Active"?

When an incident in the Microsoft Defender XDR portal has the status "Active," it indicates that there are potential threats or issues that require immediate attention. Assigning the incident to yourself for investigation is the appropriate action because it ensures that the situation is analyzed thoroughly and resolved in a timely manner.

By taking ownership of the incident, the analyst can begin assessing the details surrounding the incident, such as examining alerts, logs, and any relevant contextual information. This proactive step allows for a comprehensive understanding of the threat's implications and the appropriate response measures needed. It avoids the risks associated with leaving an active incident unattended, which could potentially lead to escalated damage or data breaches.

In this context, simply resolving the incident without investigation or ignoring it entirely would not address the risks involved or satisfy the need for proper incident management protocols.