1. Overview

To scan a repository in Azure Container Registry (ACR), create a new registry scan setting.

Prerequisites: You have installed a Defender somewhere in your environment.

  1. Open Console, and go to Defend > Vulnerabilities > Registry.


  2. Click Add registry.

  3. In the Add New Registry Setting Specification dialog, enter the following values:

    1. In the Version drop-down list, select Azure Container Registry.

    2. In the Registry field, enter the Fully Qualified Domain Name (FQDN) for the registry’s ACR login server.

      The format for the FQDN is <REGISTRY_NAME>.azurecr.io, where <REGISTRY_NAME> is a unique value specified when the registry was created. Example: example.azurecr.io.

    3. In the Repository field, enter the name of the repository to scan. Example: library/alpine.

    4. In the Tag field, enter an image tag. Leave this field blank to scan all images, regardless of their tag.

    5. In the Credential field, configure how Prisma Cloud authenticates with ACR.

      Select a credential from the drop-down list. If there are no credentials in the list, click Add new, and create an Azure credential.

    6. In the OS type field, specify whether the repo holds Linux or Windows images.


    7. In Scanner, select Automatic.

      Console automatically selects an available Defender to execute the scan job. Alternatively, you can explicitly select a Defender from the drop-down list. Defenders are listed according to the hosts where they run. For more information, see deployment patterns.

    8. In Number of scanners, enter the number of Defenders across which scan jobs can be distributed.

    9. In Cap, limit the number of images to scan.

      Set Cap to 5 to scan the five most recent images, or enter a different value to increase or decrease the limit. Set Cap to 0 to scan all images.

    10. Click Add.

  4. Click the yellow save button.

    save button
  5. Verify that the images in the repository are being scanned.

    1. Go to Monitor > Vulnerabilities > Images > Registries.

      A progress indicator at the top right of the window shows the status of the current scan. As the scan of each image is completed, its findings are added to the results table.

    2. To get details about the vulnerabilities in an image, click on it.

      To force a specific repository to be scanned again, select Scan from the top right of the results table, then click on the specific registry to rescan.