The Threats option brings up a similar screen detailing the threats during the chosen time period.
One of the options in the upper part of the Threats page is a check box to activate or deactivate Wireless Intrusion Detection and Prevention (WIDP) in the Wireless Network Manager. You can configure this feature on the Policies > Policy Hierarchy > WIDP page. (Refer to WIDP for more information). WIDP can detect and prevent attacks from rogue access points in the network.
For the SonicWave devices with the monthly Essential License, threats are displayed only for one week whereas, devices with an Advanced License display threats for one month. For a Switch with a monthly Essential License, threats are displayed for one month.