|AlienVault Ticket ID||ENG-104561|
While the web UI on AlienVault USM Appliance accounts for timezone changes in the user's locale setting, it does not take into account the start and end of daylight saving time (DST) in Events or Log History.
This results in confusion when searching for security incidents in logs just after DST changes.
Future updates to USM Appliance product UI will take into account DST changes. This will assure Historical data searches, email-actioned events, and ticket details will match to the correct event local timestamp.
There is no known workaround at this time.