Triage open alerts
Triage the open alerts, especially if more than one have yet to be investigated:
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See Monitoring Secure Cloud Analytics Alerts Generated from FTD Events for more information on cross-launching from Security Cloud Control to Secure Cloud Analytics, and viewing alerts.
Ask the following questions:
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Have you configured this alert type as high priority?
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Did you set a high sensitivity for the affected subnet?
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Is this unusual behavior from a new entity on your network?
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What is the entity's normal role, and how does the behavior in this alert fit that role?
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Is this an exceptional deviation from normal behavior for this entity?
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If a user is involved, is this expected behavior from the user, or exceptional?
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Is protected or sensitive data at risk of being compromised?
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How severe is the impact to your network if this behavior is allowed to continue?
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If there is communication with external entities, have these entities established connections with other entities on your network in the past?
If this is a high priority alert, consider quarantining the entity from the internet, or otherwise closing its connections, before continuing your investigation.