Questions: A security team is working to maintain operational visibility during a security incident involving potential indicators of compromise on a critical system. To effectively respond to the situation, what should be the primary focus of the team's investigation? System log inconsistencies Unauthorized scheduled tasks Reviewing suspicious email attachments Monitoring and analyzing anomalous activity

The answer is the fourth one: Monitoring and analyzing anomalous activity.

Explanation for each option:

1. System log inconsistencies: While system log inconsistencies can provide valuable information about potential security incidents, they are often symptoms rather than the primary focus. They can help identify when and where anomalies occurred, but they do not directly address the root cause or the ongoing nature of the incident.

2. Unauthorized scheduled tasks: This is a specific indicator of compromise that could be part of the investigation, but focusing solely on unauthorized scheduled tasks might miss other critical aspects of the incident. It is important to consider them, but they should not be the primary focus.

3. Reviewing suspicious email attachments: This is relevant if the incident is suspected to have originated from phishing or malicious emails. However, it is a narrow focus and may not cover other vectors or ongoing activities related to the incident.

4. Monitoring and analyzing anomalous activity: This should be the primary focus because it encompasses a broader range of potential indicators of compromise. By monitoring and analyzing anomalous activity, the security team can identify unusual patterns, behaviors, or changes in the system that may indicate a security breach. This approach allows for a more comprehensive understanding of the incident and helps in identifying the root cause and extent of the compromise.

In summary, focusing on monitoring and analyzing anomalous activity provides a holistic view of the incident, enabling the security team to effectively respond and mitigate the threat.