Page History

Threat Scenario

Potential cause of compromise of cybersecurity properties  of one or more assets  in order to realize a damage scenario.

Attack Path

Set of deliberate actions to realize a threat scenario.

Failure

Termination of an intended behavior of an element or an item due to a fault manifestation.

Creating a Threat Scenario

To create a Threat Scenario

1. In the Containment tree, right-click Threat Scenario and select Create Element.
   
   Image Modified
   
   
2. Do one of the following:
   • In the dialog, expand ISO 21434 and select Threat Scenario.
     
     Image Modified
     
     
   • In the search tab, type the keyword threat and then select Threat Scenario.
     
     Image Modified
     
     
3. Name the created Threat Scenario in the Containment tree and press Enter. The Threat Scenario has the suffix DS which denotes that the created element is a Threat Scenario; the number 1 indicates that it is the first Threat Scenario created.
   
   Image Modified
   

Creating a Threat Scenario Table

To create a Threat Scenario Table

1. In the Containment tree, right-click Threat Scenario and select Create Diagram.
   
   Image Modified
   
   
2. Do one of the following:
   • In the dialog, expand ISO 21434 and select Threat Scenario Table.
     
     Image Modified
     
     
   • In the search tab, type the keyword threat and then select Threat Scenario Table.
     
     Image Modified
     
     The Threat Scenario Table is now displayed in the diagram pane of the modeling tool.
     
     Image Modified

Adding a Threat Scenario to the Threat Scenario Table

To add a new Threat Scenario to the Threat Scenario Table

1. In the Threat Scenario Table, click Add New. A row is added in the Threat Scenario Table, which shows the new Threat Scenario.
   
   Image Modified
   
   
2. In the newly created Threat Scenario's row and the Name column, double-click the designated cell to name the Threat Scenario.
   
   Image Modified
   
   

To add an existing Threat Scenario to the Threat Scenario Table

1. In the Threat Scenario Table, click Add Existing.
   
   Image Modified
   
   
2. From the Select Threat Scenario dialog, select the required Threat Scenario. A row is added to the Threat Scenario Table, which shows the existing Threat Scenario.
   
   Image Modified
   
   
3.  In the existing Threat Scenario's row and the Name column, double-click the designated cell to rename the Threat Scenario.
   
   Image Modified
   

Adding a Threat Type

To add a Threat Type

• Double-click the designated cell in the Threat Scenario's row and the Threat Type column. From the drop-down list, select Threat Type.
  
  Image Modified
  The Threat Type will be added to the Threat Scenarios Table.
  
  Image Modified

Adding an Attack Path

To add an Attack Path

1. Double-click the designated cell in the Attack Path column and the required Threat Scenario's row and click Image Modified.
   
   Image Modified
   
   
2. From the Select Elementsdialog, select Attack Path.
   
   Image Modified
   
   The Attack Path is added to the Threat Scenario Table.
   
   Image Modified
   

Adding a Failure

To add a Failure

1. Double-click the designated cell in the Failure column and the required Threat Scenario's row and click Image Modified.
   
   Image Modified
   
   
2. From the Select Classdialog, select Failure.
   
   Image Modified
   
   The Failure is now shown in the Threat Scenario Table.
   
   Image Modified
   

Adding and Impacted Asset

To add an Impacted Asset

1. Double-click the designated cell in the Impacted Asset column and the required Threat Scenario's row and click Image Modified.
   
   Image Modified
   
   
2. From the Select Elementdialog, select Impacted Asset.
   
   Image Modified
   
   The Impacted Asset is added to the Threat Scenario Table.
   
   Image Modified
   

Threat Scenario Table Example

Image Modified