Historical Vulnerability Assessment

This pane shows how the information displayed in the Vulnerability Impact by Severity panes changes over time.

The chart view of this pane shows you the average aggregate risk in your enterprise over a period of time. The vertical axis represents the number of devices. The horizontal axis represents time. You can view data for the last seven days, 30 days, or 365 days. Each colored region represents the number of devices in each of the severity categories: High (red), Medium (orange), Low (yellow), No Vulnerabilities (green), and Unknown (blue).

Historical Vulnerability Assessment

When you rest the cursor on a data point that lies on a line between colored regions, a circle highlighting that data point appears, and a tool tip shows you the number and percentage of devices in that vulnerability category on that day.

Tool Tip

In this example, 46.9% of the 490 devices scanned had at least one high severity vulnerability. The tool tip always displays information from the last vulnerability scan performed. Typically a scan is performed daily. If a scan was not performed for several days, the graph will be flat for those days, and the information in the tool tip will not change.

The tool tips always show you when the most recent vulnerability scan was performed. As you analyze your vulnerability data, be sure to check the date of the most recent scan.

Note that the appearance of the circle that appears around the data point when a tool tip is displayed will vary depending on the color of the region underneath the circle.

The grid view for this pane lists of the number of devices in each risk category on each day during the specified time period. The grid also indicates the date on which the environment was last scanned.

Although the chart does not contain a band for devices in the Unknown severity category, the grid view includes a column for these devices.


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