SaaS Security Administrator's Guide
    : Begin Scanning Office 365 Apps
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    3. SaaS Security Administrator's Guide
    4. Data Security
    5. Secure Sanctioned SaaS Apps on Data Security
    6. Add Cloud Apps to Data Security
    7. Begin Scanning Office 365 Apps
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    SaaS Security Administrator's Guide

    Begin Scanning Office 365 Apps

    Table of Contents

    Begin Scanning Office 365 Apps

    Learn how to connect the Office 365 apps to Data Security to begin scanning for security violations.
    To connect Office 365 to Data Security and begin scanning files and folders on OneDrive and SharePoint, you need to:
    • Ensure that you have an Office 365 account with Global Administrator role permissions and valid OneDrive license assigned to that administrator account.
    • Ensure that you have a OneDrive subscription. A storage plan is separate from an Office 365 subscription.
    • Grant Data Security access to Office 365.
    • Add the Office 365 app to Data Security, providing Data Security information about your Office 365 account.
    • Enable activity monitoring. Turn on auditing in Office 365 to record user and admin activity.
    If you have a previous version of the Office 365 app, you must reauthenticate to update the permissions so that Office 365 app does not stop scanning for assets.
    Support for automated remediation capabilities varies by SaaS application.

    Prepare To Add Office 365 App

    Before you add the Office 365 app, perform prerequisites steps to make use of all the capabilities that the app supports for an efficient onboarding experience.
    1. (Recommended) Add your Office 365 app domain as an internal domain.
    2. (Optional) Enable group-based selective scanning.
      If you plan to use selective scanning using Azure Active Directory, you must retrieve your Azure AD group information before adding your Office 365 application so Data Security can discover and scan assets belonging to the user groups you want to monitor.
    3. Next step: Proceed to Enable Activity Monitoring.

    Enable Activity Monitoring

    Turn on auditing in Office 365 to record user and admin activity. This feature is enabled by default, but it’s important to verify that your organization didn’t turn off auditing. Data Security needs audit logs to search and report on activity and to perform forward scans. If you don’t turn on auditing, you’ll observe missing functionality related to user and admin activity.
    1. Log on to your Office 365 Admin account.
    2. Verity that auditing is enabled. If it isn't, turn on auditing. For more information, see Microsoft documentation about turning auditing on or off.
    3. Next step: Proceed to Add Office 365 App.

    Add Office 365 App

    In order for Data Security to scan assets, you must consent to specific permissions during adding the Office 365 app. Without the requested permissions, Data Security can’t authenticate (OAuth2) with Office 365 and can’t scan assets, even after you successfully install the Office 365 app. If you forget to consent to permissions, you can correct the misconfiguration, but it’s more efficient to avoid the issue.
    1. Establish communication between Data Security and Office 365.
      1. Go to http://portal.microsoftonline.com and log out of Office 365 to ensure that you aren't logged in as a user other than an account with Global admin role permissions.
        By default, when you instruct Data Security to move an asset to Admin Quarantine folder, that asset folder resides on the admin account that you use to onboard the Office 365 app. However, after you onboard Office 365 app, Data Security enables you to specify an alternative account.
      2. Log in to Office 365 using an account that has the Global admin role permissions:
    2. To add the Office 365 app, go to Data SecurityApplicationsAdd ApplicationOffice 365.
      1. Select Office 365. If you are using the Cloud Management Console, skip the following step.
      2. (For SaaS Security Console users only) Select one of the following:
        • Connect to Office 365 Account
        • Using a custom configuration?
        If you have a dedicated Office 365 account, select Using a custom configuration? and provide the URL for OneDrive and SharePoint that are part of your custom configuration.
      3. Enter the login credentials for the account with Global admin role privileges on the Microsoft online page to which Data Security redirects you.
      4. Review and Accept the permissions requested.
        Data Security requires these permissions to scan your assets on Office 365.
        After authentication, Data Security adds the new Office 365 app to the Cloud Apps list as Office 365 n, where n is the number of Office 365 app instances that you connected to Data Security. For example, if you added one Office 365 app, the name displays as Office 365 1.
    3. Next step: Proceed to Customize Office 365 App.

    Troubleshooting Onboarding for Office 365 App

    To ensure that your app has onboarded correctly without any issues in authentication or permissions, Data Security performs validation checks between the onboarding and scanning process. You can start scanning only after a successful validation. For Office 365, the following two validations happen:
    • App Authentication
    • Validating Permissions
    After the validation is successful, Data Security displays sample assets and sample activities.
    If you don't have any subscriptions, you will not see any User activities in the validation page. It might take up to 12 hours for the first content blobs to become available. For more information, see Office 365 Management Activity API reference.
    If the App Authentication or Validating Permissions check fails, try the following:
    1. Ensure you have administrator permissions.
    2. Check if Palo Alto Networks application is listed in the list of Enterprise Applications. Following are the app names for specific regions:
      • Prisma SaaS by Palo Alto Networks AP1
      • Prisma SaaS by Palo Alto Networks EU1
      • Palo Alto Networks NG-CASB - India - Office365
      • Prisma SaaS by Palo Alto Networks NAM
      • Palo Alto Networks NG-CASB - UK - Office365
      • Palo Alto Networks NG-CASB - Aus - Office365
    3. If Palo Alto Networks application is not listed, check if the Audit Logs Activity displays as Consent to application, Target as <app from the list given above>, and Status as Success.
    See the following table to understand the errors you are facing during validation.
    Error Codes
    Description
    Errors in App Authentication
    invalid_request
    Request is invalid.
    invalid_grant
    Internal error encountered.
    unauthorized_client
    The installed app in the Marketplace was uninstalled manually from your cloud app.
    invalid_client
    Issue related to Marketplace instance.
    temporarily_unavailable
    Office 365 app issue on the server side. Please reinstall.
    Errors in fetching sample assets and activities
    accessDenied
    Access is denied for ${user}.
    activityLimitReached
    App's API limit reached. Try after sometime.
    invalidRange
    You don't have any thing to get for this entity.
    invalidRequest
    Request is invalid.
    itemNotFound
    No data associated with this entity.
    notAllowed
    Authentication failure while retrieving the entity.
    notSupported
    Getting entity with required information no longer supported.
    serviceNotAvailable
    Office 365 server is not responding.
    quotaLimitReached
    Quota for app request has been exhausted for now.
    unauthenticated
    Office 365 app issue from server side.
    The other most common issues related to onboarding are as follows:
    Symptom
    Explanation
    Solution
    After you add the Office 365 app, no scanned assets display for Office 365.
    Data Security doesn’t have permissions to access Office 365, resulting in a misconfiguration.
    Log in to the Azure portal and grant the necessary permissions for Data Security to successfully scan your assets on Office 365.
    Office 365 app stopped scanning for assets.
    On March 2020 Data Security changed Office 365 app for SharePoint to use Microsoft’s new Graph API to improve performance and supportability (OneDrive already uses Graph API).
    Reauthenticate your Office 365 app in order for Data Security to continue scanning your assets. You’ll be asked to consent to the required SharePoint permissions. You do not need to repeat the onboarding process.
    You receive an account mismatch error when you reauthenticate.
    Although your account is valid, it is for a different Microsoft tenant. It is not uncommon for organizations to have more than one tenant. For security reasons, log on using an account associated with the tenant you used to onboard the cloud app and for which you intended to grant Data Security access.
    Sometimes this issue occurs unknowingly when your browser caches your account information; in this case, log in again using an Incognito window. Otherwise, log in using the account associated with that other tenant.
    You observe that the policy violation log is missing, violations aren’t being created for user activity rules, and activities on Explore > Activities do not display.
    Data Security needs audit logs to search and report on user activity. You forgot to enable this feature.
    Turn on auditing on Office 365.
    If the issue persists, contact SaaS Security Technical Support.

    Customize Office 365 App

    After you add the Office 365 app, customize the app to make use of capabilities that are unique to this app or that differentiate this app instance from others.
    1. (Optional) Specify an Alternative account for quarantined files.
      You can specify a different Office 365 account (in UPN format) for the quarantine administrator for precise assignment of incident management responsibilities. If you choose not to specify an alternative account, Data Security uses the onboarding account to quarantine files in the Admin Quarantine folder. The Office 365 account for the quarantine administrator doesn’t need to have admin privileges. After you define this quarantine administrator, you can’t modify the setting without deleting the Office 365 app and repeating the onboarding process; therefore, use a service account that persists as administrators join and leave your organization.
    2. (Optional) Give a descriptive name to this app instance.
      1. Select the Office365n link on the Cloud Apps list.
      2. Enter a descriptive Name to differentiate this instance of Office 365 from other instances you are managing.
      3. Click Done to save your changes.
    3. Next Step: Proceed to Selective Scanning on Office 365 App.

    Selective Scanning on Office 365 App

    Perform selective scanning on your Office 365 app.
    1. (Optional) Enable group-based selective scanning.
      If you have not already done so, instruct Data Security to retrieve your Azure AD group information, then return to this step to choose the user groups.
      You cannot change the status of selective scanning for your Office 365 app which has already started scanning.
    2. You can choose to either Scan or Exclude From Scan your user groups.
    3. Choose your groups from the Available Groups list and move them to the Selected Groups list.
    4. Click Save.
      You can perform each of the above 4 steps any number of times and make any changes as long as you have not started scanning your Office 365 app. However, if you have started scanning, all operations related to selective scanning are disabled.
    5. Next step: Proceed to Start Scanning and Monitor Results.

    Start Scanning and Monitor Results

    When you add a new cloud app, then enable scanning, Data Security automatically scans the cloud app against the default data patterns and displays the match occurrences. You can take action now to improve your scan results and identify risks.
    1. To Start scanning the new Office 365 app for risks, go to Data SecurityApplicationsOffice 365Enable Scanning.
      Data Security will scan files uploaded by external collaborators only if those external collaborators are added to the Azure Active Directory as External.
    2. Monitor the scan results.
      During the discovery phase, as Data Security scans files and matches them against enabled policy rules:
      • Verify that SaaS Security web interface displays assets. If none display, fix the misconfiguration.
      • Verify that your default policy rules are effective. If the results don’t capture all risks or you see false positives, proceed to next step to improve your results.
    3. (Optional) Modify match criteria for existing policy rules.
    4. (Optional) Add new policy rules.
      Consider the business use of your cloud app, then identify risks unique to your enterprise. As necessary, add new:
    5. (Optional) Configure or edit a data pattern.
      You can Configure Data Patterns to identify specific strings of text, characters, words, or patterns to make it possible to find all instances of text that match a data pattern you specify.

    Fix Data Security Access to Office 365

    If you forgot to grant the necessary permissions during onboarding, you need to fix this misconfiguration.
    1. Grant Data Security access to Office 365 using Azure Portal.
      Without permissions, Data Security can’t authenticate (OAuth2) with Office 365 and can’t scan assets, even after you successfully install the Office 365 app.
      1. Log in to Azure Portal at https://portal.azure.com as Global Administrator.
      2. Select Enterprise applications All applications.
      3. Select Aperture by Palo Alto NetworksSecurityPermissions.
      4. Click Grant admin consent for yourOrganization.

    Fix Office 365 Quarantine Issues

    If Data Security is unable to quarantine the asset, quarantine status displays a summary explanation of the quarantine failure. If you need additional information, and due to the underlying differences between cloud apps, use the table below for a detailed explanation and resolution.
    By default, Office 365 cloud app quarantines malicious assets, causing the quarantined file to become unavailable to third-party quarantine capabilities, including those on Data Security. To provide the high user experience to which you’ve become accustomed, the SaaS Security web interface informs you when your cloud app quarantines an asset.
    Data Security understands that your organization needs to remediate files across cloud apps from a single user interface. Data Security is working diligently with cloud app vendors to enable third-party remediation of malicious assets.
    If you have super admin permissions on your cloud app, you will always have direct access to the assets quarantined by your cloud app, even when Data Security doesn’t.
    Symptom
    Explanation
    Resolution
    License and Subscription
    After you add the Office 365 app, Data Security doesn’t quarantine your OneDrive assets and quarantine status indicates Unable to create quarantine location.
    You must have a OneDrive subscription. Only then can Data Security create the necessary Quarantine folder on OneDrive and quarantine assets.
    Verify that you have a OneDrive subscription.
    If you purchase a new OneDrive subscription, you must reauthenticate on Data Security.
    Data Security stopped quarantining your OneDrive assets and quarantine status indicates Unable to create quarantine location.
    Data Security requires the administrator account and OneDrive license that you used to onboard the Office 365 app, for moving assets to the quarantine folder.
    After you add the Office 365 app, if later that same administrator account is deleted or the OneDrive license is revoked, Data Security can no longer quarantine assets.
    Verify that the administrator account you used to add the Office 365 app still exists and has a valid OneDrive license.
    If the administrator account no longer exists, you must reauthenticate on Data Security using a different administrator account with Global Administrator role permissions and a valid OneDrive license.
    If the administrator account exists but doesn’t have a valid OneDrive license, you must add that OneDrive license to the administrator account, then reauthenticate, or use another administrator account with Global Administrator role permissions that has a valid OneDrive license, then reauthenticate.
    Files Unavailable for Quarantine
    Your file doesn’t display in SaaS Security web interface and your cloud app notified you that it quarantined the file.
    Data Security doesn’t know that the file exists.
    Your cloud app immediately discovered the malware and quarantined it—before Data Security could copy the file’s metadata and the asset’s contents.
    As super admin, remediate the file within your cloud app.
    Quarantine status indicates Unable to download asset.
    Microsoft Thread Protection blocked the file for download.
    Data Security copied the file metadata but can’t download a copy of the asset itself for WildFire analysis because your cloud app quarantined the asset, making it unavailable.
    Data Security immediately copied the asset metadata—before the cloud app could discover and quarantine it.
    Data Security attempted to download a copy of the file to send to WildFire, but the cloud app already discovered and quarantined the asset.
    As super admin, remediate the file within your cloud app.
    Your file’s malware status is File Unavailable.
    You’re unable to quarantine a file that displays in Data Security web interface. The Actions:Quarantine option is unavailable.
    You’re unable to perform Download and Restore quarantine actions on a file initially quarantined by Data Security.
    Data Security can’t download a new copy of the asset and perform quarantine actions because your cloud app quarantined the asset, making it unavailable.
    Data Security immediately copied the asset metadata, downloaded a copy of the asset itself, and quarantined it—before the cloud app could detect malware and quarantine it.
    With WildFire analysis enabled, Data Security sent your file to WildFire, a malware verdict was returned, and so Data Security quarantined the asset based on your policy.
    After the copy of the file expired on SaaS Security web interface or Data Security received notification from your cloud app that your cloud app eventually discovered the malware and quarantined the asset, Data Security overwrote the malware status.
    As super admin, if you need to download or restore the file, do so on your cloud app.
    However, if you want to delete the file, do so on Data Security—not your cloud app, to enable Data Security to close the open incident and the quarantined file, keeping the state up to date.
    You’re unable to View Snippet or access any other historical information on a file initially quarantined by Data Security.
    Your file’s malware status is File Unavailable, but previously had a malware status of Pending Analysis or Analyzed.
    You’re unable to view the WildFire report for a file whereas you were able to previously, although the WildFire data pattern matches display in Data Security web interface.

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