An etsysThreatNotificationInformationMessage1 indicates that a
potential threat has been identified.  This trap should be
generated when the IP address of the source of the threat is
known, but not the device and interface.
(etsysThreatNotificationSenderName and
etsysThreatNotificationTargetAddress are optional objects)

An etsysThreatNotificationInformationMessage2 indicates that a
potential threat has been identified.  This trap should be
generated when the device and interface of the threat is known,
but the IP address of the source may or may not be known.
(etsysThreatNotificationSenderName,
etsysThreatNotificationInitiatorAddress
and etsysThreatNotificationTargetAddress are optional objects)

The purpose of etsysThreatNotificationInformationMessage3 is to
support devices that can only send single varbind notifications.
See etsysThreatNotificationConsolidatedData for more details.

An etsysThreatNotificationInformationMessage4 indicates that a
potential threat has been identified.  This trap should be
generated when the device and interface of the threat is known,
but the IP address of the source may or may not be known.
(etsysThreatNotificationSenderName,
etsysThreatNotificationInitiatorAddress
and etsysThreatNotificationTargetAddress are optional objects)

An etsysThreatUndoNotificationMessage indicates that a
potential threat that had been identified has been resolved.
When this message is received, if a user was quarantined,
the action should be undone.

An etsysThreatResponseNotificationMessage indicates that a
potential threat that had been identified has been acted upon.
When this message is received, a user was either quarantined,
or the action was undone.