Vanta's Tenable integration enables you to control which assets should be pulled into Vanta.
Assign a tag to Assets in Tenable
Navigate to the Assets page
Select a device to add the tag to
Click Add Tags
Create and apply the new tag to the device
Apply this tag to all of the devices you would like to pull into Vanta
Edit Permissions
Navigate to Access Control -> Permissions
Select the Vanta permission
Under Objects -> remove All Assets
Add the new tag to Objects
Save