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In the context of Microsoft security solutions like Microsoft 365 Defender and Azure Sentinel, incident creation logic is the process that determines when and how alerts are aggregated into incidents. An incident in these solutions represents a collection of related alerts that map to a potential security threat or breach.
Microsoft 365 Defender correlates related alerts that could represent a complex multi-stage attack into a single incident, allowing security teams to respond more effectively. The logic behind incident creation involves:
For example, if multiple alerts are triggered by a suspicious file across several devices within a short timeframe, the incident creation logic might aggregate these alerts into a single incident for the security team to investigate as a potential malware campaign.
Azure Sentinel incident creation logic is powered by the analytics rules defined within the platform. Here’s how it works:
For instance, if a rule is configured to look for signs of unusual login locations, any relevant alerts can be grouped into an incident that tracks all the concerning login activities for further analysis.
In summary, incident creation logic is a pivotal concept that aids in identifying, consolidating, and managing potential security threats efficiently within an organization’s network. Both Microsoft 365 Defender and Azure Sentinel use sophisticated mechanisms for incident creation to enhance the effectiveness of security operations analysts.
Explanation: Incident creation logic in Microsoft security solutions can often be customized to some extent by users to fit their organizational needs and workflows.
Explanation: Incident creation typically involves aggregating related alerts into a single incident to streamline the investigation and remediation process.
Answer: D) Time of day when the alert was generated
Explanation: While severity, source IP, and alert title are common considerations for incident creation logic, the time of day is not typically a defining factor in incident creation logic.
Explanation: Defining incident creation logic affects how incidents are prioritized and managed, which in turn impacts resource allocation and response times.
Answer: B) To reduce the volume of alerts that analysts must handle
Explanation: Grouping similar alerts into incidents helps to reduce the volume of alerts and streamlines the management and investigation process.
Answer: C) An aggregation of related alerts that may represent a potential security issue or breach
Explanation: In Microsoft Security Operations, an incident is defined as an aggregation of related alerts that are grouped together to represent a cohesive security issue or potential breach for more efficient handling.
Explanation: While manual intervention can be necessary in some cases, automated incident creation is important for scale and efficiency, and custom logic can be used to ensure accuracy while reducing manual intervention.
Answer: A, B, D
Explanation: Incident creation logic is typically based on relevant security factors such as the threat detected, the affected user/entity, and the TTPs used in the attack, while weather and geographical location are generally not part of automation logic.
Explanation: Suppression rules can be defined to prevent the creation of incidents that meet certain criteria, reducing the noise and focusing on more relevant threats.
Answer: B) Security Operations Analysts
Explanation: Security Operations Analysts, often in collaboration with other security team members, are primarily responsible for defining the incident creation logic that aligns with the organization’s security posture and operations workflows.
Explanation: Incident creation logic should be reviewed and updated regularly to adapt to evolving threats, organizational changes, and operational feedback.
Answer: C) Microsoft Sentinel Fusion
Explanation: Microsoft Sentinel Fusion is a feature specifically designed to correlate alerts into incidents by using machine learning to identify and combine related alerts into a single incident, making it easier for analysts to investigate and manage potential threats.
There are three ways to detect threats in Microsoft Sentinel by using built-in analytics rules, by using custom analytics rules, or by using custom scheduled queries.
Incident creation logic is the process by which alerts are aggregated and combined into a single incident for easier investigation and remediation.
Defining incident creation logic helps to streamline the investigation process by aggregating related alerts into a single incident.
The two types of incident creation logic are scheduled and aggregation rules.
Scheduled incident creation combines alerts that occur within a specified time window into a single incident.
The default time window for scheduled incident creation is one hour.
Aggregation rules are used to group alerts based on common properties, such as source IP address, destination IP address, or user name.
Yes, aggregation rules can be used in conjunction with scheduled incident creation to further group related alerts.
Using aggregation rules can help to reduce the number of incidents that need to be investigated, simplify the investigation process, and improve overall efficiency.
Properties such as source IP address, destination IP address, user name, file name, process name, and event ID can be used to create aggregation rules in Microsoft Sentinel.
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