DICOM PS3.15 2021c - Security and System Management Profiles

A.5.3.11 Security Alert (Current)
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#### A.5.3.11 Security Alert

This message describes any event for which a node needs to report a security alert, e.g., a node authentication failure when establishing a secure communications channel.

### Note

The Node Authentication event can be used to report both successes and failures. If reporting of success is done, this could generate a very large number of audit messages, since every authenticated DICOM association, HL7 transaction, and HTML connection should result in a successful node authentication. It is expected that in most situations only the failures will be reported.

Table A.5.3.11-1. Audit Message for Security Alert

Real World Entities | Field Name | Opt. | Value Constraints
--- | --- | --- | ---
Event | EventID | M | EV (110113, DCM, "Security Alert")
EventActionCode | M | Shall be: E = Execute
EventDateTime | M | not specialized
EventOutcomeIndicator | M | Success implies an informative alert. The other failure values imply warning codes that indicate the severity of the alert. A Minor or Serious failure indicates that mitigation efforts were effective in maintaining system security. A Major failure indicates that mitigation efforts may not have been effective, and that the security system may have been compromised.
EventTypeCode | M | Values selected from DCID 403 “Security Alert Type Code”.
Active Participant: Reporting Person and/or Process (1..2) | UserID | M | not specialized
AlternativeUserID | U | not specialized
UserName | U | not specialized
UserIsRequestor | M | not specialized
RoleIDCode | U | not specialized
NetworkAccessPointTypeCode | U | not specialized
NetworkAccessPointID | U | not specialized
Active Participant: Performing Persons or Processes (0..N) | UserID | M | not specialized
AlternativeUserID | U | not specialized
UserName | U | not specialized
UserIsRequestor | M | Shall be FALSE
RoleIDCode | U | not specialized
NetworkAccessPointTypeCode | U | not specialized
NetworkAccessPointID | U | not specialized
Participating Object: Alert Subject (0..N) | ParticipantObjectTypeCode | M | Shall be: 2 = system
ParticipantObjectTypeCodeRole | U | Defined Terms: 5 = master file 13 = security resource
ParticipantObjectDataLifeCycle | U | not specialized
ParticipantObjectIDTypeCode | M | Defined Terms: DT (12, RFC-3881, "URI") DT (110182, DCM, "Node ID")
ParticipantObjectSensitivity | U | not specialized
ParticipantObjectID | M | For a ParticipantObjectIDTypeCode of (12, RFC-3881, "URI"), then this value shall be the URI of the file or other resource that is the subject of the alert. For a ParticipantObjectIDTypeCode of (110182, DCM, "Node ID") then the value shall include the identity of the node that is the subject of the alert either in the form of node_name@domain_name or as an IP address. Otherwise, the value shall be an identifier of the type specified by ParticipantObjectIDTypeCode of the subject of the alert.
ParticipantObjectName | U | not specialized
ParticipantObjectQuery | U | not specialized
ParticipantObjectDetail | M | An element with the Attribute "type" equal to "Alert Description" shall be present with a free text description of the nature of the alert as the value
ParticipantObjectDescription | U | not specialized
SOPClass | U | See Table A.5.2-1
Accession | U | not specialized
NumberOfInstances | U | not specialized
Instances | U | not specialized
Encrypted | U | not specialized
Anonymized | U | not specialized

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DICOM PS3.15 2021c - Security and System Management Profiles