> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/cortex-xpanse/attack-surface-testing/select-targets-for-attack-surface-testing.md).

# Select targets for Attack Surface Testing

Attack Surface Testing targets are directly-discovered services, which are services that are definitively associated with an asset that belongs to your organization. You can choose to run attack surface tests on all your relevant directly-discovered services or you can specify a subset of services.

How to select a set of targets for attack surface testing

1. Navigate to **Settings** → **Configurations** → **Vulnerability Testing Configuration**
2. In the **Target Testing** section, click **Edit Targets** (or **Add Targets** if this is the first time you have selected targets.)
3. Use the filter to define a set of targets from your list of Services.
4. Click **Save Targets**.
5. Make sure the toggle is set to **Selected Targets**. Setting the toggle to All Targets will override your target selection.

How to select all targets for attack surface testing

1. Navigate to **Settings** → **Configurations** → **Vulnerability Testing Configuration**
2. In the **Target Testing** section, set the toggle to **All Targets**.


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