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Use Case Manager: This app is specifically designed for investigation and analysis of offenses within QRadar. It offers more focused tools for this task than general Reports.

Active Rules: This view within the Use Case Manager provides insights into rules that directly triggered offenses. This is essential for filtering down to our target rules.

Filtering:

Start Date: Allows you to limit the analysis timeframe to the "previous week" as specified in the question.

Closure Reason: Crucially, this lets you isolate offenses marked as "False Positive" or "Tuned" – the core of the question.

Vulnerability Scans and Offenses: VA scanners frequently trigger alerts as their activity can resemble malicious behavior.

Host Definitions: This QRadar building block group helps define known hosts, including their attributes and roles on the network.

Adding to Definitions: Including the VA scanner's IP in the host definitions allows QRadar to recognize it and properly categorize its activity.

The information displayed when pressing “Ctrl + Space” in the search field in the Log Activity tab in QRadar is not explicitly mentioned in the search results. However, in general, this shortcut is often used in various software and platforms to display a list of available commands, functions, or properties. In the context of QRadar, it’s likely that pressing “Ctrl + Space” in the search field would display a list of available AQL (Ariel Query Language) databases, functions, and fields (properties).

Here's the breakdown of why this approach is the most suitable:

Focused Export: The "Event Export (with AQL)" option allows targeted exporting of events based on specific AQL queries. This ensures you only extract the necessary data.

Usability: The Log Activity tab's interface, including the Test and Export functionality, makes it easy to use even for less technical users familiar with basic QRadar concepts.

CSV Format: CSV offers a readable, widely compatible format for data review outside of QRadar.

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 .

In IBM Security QRadar SIEM, generating a report using the QRadar Report Wizard requires a "Saved Search" and a "Layout." A Saved Search is a predefined search criterion that users save in QRadar to reuse for various reporting or analysis purposes. It acts as the data source for the report, defining what data will be included. The Layout component refers to the structure and presentation of the report, including how the data from the Saved Search is organized and displayed. It encompasses the formatting, charts, tables, and other visual elements that make up the final report. Together, these components ensure that reports are not only informative but also well-organized and readable, catering to the specific informational needs and preferences of the users or stakeholders.

When an analyst right-clicks on the Source IP or Destination IP that is associated with an offense at the Offense Summary in QRadar, two of the top-level options are DNS Lookup and WHOIS Lookup1. These options provide additional information about the IP address, such as its domain name (DNS Lookup) and registration information (WHOIS Lookup)1.