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In Rule Response for Offense Naming, QRadar provides options to either contribute to or set/replace the name of the associated offenses. These options allow for dynamic naming of offenses based on event name information, facilitating easier identification and categorization of offenses​​.

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When a security analyst needs to filter events based on the time they occurred on the endpoints, the most relevant parameter to use is "Log Source Time." This parameter reflects the original timestamp of an event as recorded by the log source, providing the actual time when the event took place on the endpoint, regardless of when the event was received or processed by QRadar. This is crucial for accurate temporal analysis of events, ensuring that the timing of activities is correctly aligned with the actual occurrence on the devices or systems generating the logs.

Understanding Offense Parameters in QRadar: In IBM QRadar, offenses are evaluated and prioritized based on several parameters that determine the significance and potential impact of the security incident.

Key Parameters:

Relevance: Indicates how relevant the event is to the organization's environment.

Severity: Represents the potential damage or impact the event could have on the system.

Credibility: Reflects the likelihood that the event represents a true security incident.

Magnitude Rating Calculation: The magnitude rating is a composite score that is calculated using the relevance, severity, and credibility of an offense. This rating helps security analysts prioritize incidents based on their potential threat level.

Reference Confirmation: According to IBM QRadar documentation, the magnitude rating is the parameter that is derived from the relevance, severity, and credibility of an offense.

References:

IBM QRadar documentation on offense management and parameters confirms the calculation of the magnitude rating based on relevance, severity, and credibility .