What should be the primary focus of a security team's investigation during a security incident involving indicators of compromise?

The primary focus of a security team's investigation during a security incident involving indicators of compromise should be on monitoring and analyzing anomalous activity. Anomalous activity refers to behaviors or events that deviate from the expected operations within a system or network. This can include unusual login attempts, abnormal data transfers, or unexpected system access patterns.

By closely monitoring and analyzing these anomalies, security teams can identify potential threats in real time, understand their nature, and assess the extent of the compromise. This proactive approach enables teams to determine whether the system has been breached and what responsive measures need to be implemented to contain the threat. Understanding the pattern of anomalous activity is crucial for both detecting current incidents and preventing future ones, as it can provide insights into weaknesses in security posture.

The focus on anomalous activity is essential because it transcends specific indicators of compromise, allowing a broader view of ongoing security issues and enabling a more effective response strategy.