9 Standard EventTypes 
9.6 AuditSecurityEventType
This is a subtype of AuditEventType and is used only for categorization of security-related Events. This type follows all behaviour of its parent type.
Online versions of OPC UA specifications and information models.
This is a subtype of AuditEventType and is used only for categorization of security-related Events. This type follows all behaviour of its parent type.