Hello,
For Client security alert and Risk outbreak, specifies the type and extent of the outbreak that should trigger this notification.
The outbreak type that you select results in the following information:
• Occurrences on any computer
The number of security events or risks that are found in the number of minutes that you set.
• Occurrences on single computer
The number of security events or risks that are found on computer name in the number of minutes that you set.
• Occurrences on distinct computers
The number of attacked computers or infected computers that are found in the number of minutes that you set.
Note: In this context, infected means that a risk was detected. It does not necessarily mean that the risk is still active.
Hope that helps!!