Table of Contents
Triage incidents in Microsoft Sentinel is a critical task for security operations teams to effectively prioritize and respond to threats. Microsoft Sentinel provides a cloud-native SIEM solution that leverages large-scale data collection, analysis, and correlation to help security professionals detect, investigate, and respond to security threats in real time. The SC-200 Microsoft Security Operations Analyst exam measures the abilities of security analysts in managing incidents, which includes the triage process.
Incident triage in Microsoft Sentinel involves examining and categorizing alerts to determine their significance and deciding on the appropriate response. It is a process which ensures that security incidents are prioritized based on the impact, urgency, and severity of the event.
For instance, an alert regarding a potential malware infection on an executive’s laptop would be high severity due to the potential access to sensitive information. Triage in Microsoft Sentinel would aggregate any related alerts, for example, failed logins or unusual data exfiltration attempts, to form a comprehensive view of the incident. An automated playbook might isolate the device while the analyst investigates further.
Effective triage is a foundational aspect of incident response in Microsoft Sentinel. Analyzing incidents promptly and accurately is essential for maintaining the integrity of an organization’s security posture. By mastering triage processes and best practices, analysts are better equipped to minimize the potential damage from cybersecurity threats.
Answer: (A) True
Explanation: Microsoft Sentinel can automatically classify incidents into different severity levels based on predefined rules and criteria, helping to streamline the triage process.
Answer: (C) Reviewing the incident details
Explanation: Before an analyst can take action on an incident, they must first review the incident details to understand the scope of the incident and which resources are affected.
Answer: (B) False
Explanation: Alerts in Microsoft Sentinel can be aggregated into incidents, allowing them to be triaged as a group rather than individually, which increases efficiency.
Answer: (D) All of the above
Explanation: Users can assign incidents, change their severity, and add tags for better management and classification within Microsoft Sentinel.
Answer: (A) True
Explanation: Custom detection rules can be defined in Microsoft Sentinel to generate incidents based on specific criteria, providing flexibility in incident detection.
Answer: (A) Setting a rule based on the number of days since the last alert
Explanation: Microsoft Sentinel allows the setup of auto-closing rules for incidents based on conditions such as the number of days since the last associated alert.
Answer: (A) True
Explanation: Incident data from Microsoft Sentinel can be exported to a CSV file for further analysis outside the Sentinel environment.
Answer: (D) All of the above
Explanation: Effective triage requires considering potential business impact, identifying patterns or trends, and understanding the security configurations involved in the incident.
Answer: (A) True
Explanation: Microsoft Sentinel can ingest alerts from third-party security solutions, allowing for a unified incident response platform.
Answer: (D) Analytics rules
Explanation: Analytics rules in Microsoft Sentinel can be used to define how alerts are grouped into incidents based on various conditions.
Answer: (B) False
Explanation: Considering historical data is crucial when triaging an incident as it provides context and can help in identifying trends and patterns related to the entities involved.
Answer: (D) B and C only
Explanation: While incident severity is important, an effective triage process should also use bookmarks to manage investigation progress and incorporate threat intelligence data to enrich incident context.
Incident triage is a process of analyzing and prioritizing the alerts or incidents generated by security monitoring solutions in order to identify which ones need further investigation.
Incident triage is important in security operations because it allows security analysts to quickly identify and respond to high-priority security incidents, while avoiding wasting time and resources on false positives.
The key elements of an incident triage process include
Incident response planning and execution
How can Microsoft Sentinel help with incident triage?
What is the incident triage dashboard in Microsoft Sentinel?
What are the incident metrics in Microsoft Sentinel?
Incident age
Time to respond
Time to close
Incident metrics can be used to identify areas of the incident triage process that need improvement, such as reducing the time to triage or respond to incidents, and to monitor the effectiveness of incident response over time.
Incident metrics can be configured in Microsoft Sentinel by creating custom views and visualizations in the incident triage dashboard, and by using Microsoft Power BI to build custom reports and dashboards.
Automation and orchestration can help with incident triage in Microsoft Sentinel by enabling security teams to automate repetitive and time-consuming tasks, such as incident enrichment and analysis, and to orchestrate response workflows across different security solutions.
Integrating other security solutions with Microsoft Sentinel can provide additional context and visibility into security incidents, enabling security teams to make more informed decisions and respond more quickly and effectively to incidents.
If this material is helpful, please leave a comment and support us to continue.