Configure and view alerts for data loss prevention polices

Data loss prevention (DLP) polices can take protective actions to prevent unintentional sharing of sensitive items. When an action is taken on a sensitive item, you can be notified by configuring alerts for DLP. This article shows you how to define rich alert policies that are linked to your data loss prevention (DLP) policies. You'll see how to use the new DLP alert management dashboard in the Microsoft 365 compliance center to view alerts, events, and associated metadata for DLP policy violations.

Features

The following features are part of this:

  • DLP alert management dashboard: In the Microsoft 365 compliance center, this dashboard shows alerts for DLP policies that are enforced on the following workloads:

    • Exchange
    • SharePoint
    • OneDrive
    • Teams
    • Devices
  • Advanced alert configuration options: These options are part of the DLP policy authoring flow. Use them to create rich alert configurations. You can create a single-event alert or an aggregated alert, based on the number of events or the size of the leaked data.

Before you begin

Before you begin, make sure you have the necessary prerequisites:

  • Licensing for the DLP alerts management dashboard
  • Licensing for alert configuration options
  • Roles

Licensing for the DLP alert management dashboard

All eligible tenants for Office 365 DLP can access the new DLP alert management dashboard. To get started, you should be eligible for Office 365 DLP for Exchange Online, SharePoint Online, and OneDrive for Business. For more information about the licensing requirements for Office 365 DLP, see Which licenses provide the rights for a user to benefit from the service?.

Customers who use Endpoint DLP who are eligible for Teams DLP will see their endpoint DLP policy alerts and Teams DLP policy alerts in the DLP alert management dashboard.

Licensing for alert configuration options

  • Single-event alert configuration: Organizations that have an E1, F1, or G1 subscription or an E3 or G3 subscription can create alert policies only where an alert is triggered every time an activity occurs.
  • Aggregated alert configuration: To configure aggregate alert policies based on a threshold, you must have either of the following configurations:
    • An E5 or G5 subscription
    • An E1, F1, or G1 subscription or an E3 or G3 subscription that includes one of the following features:
      • Office 365 Advanced Threat Protection Plan 2
      • Microsoft 365 E5 Compliance
      • Microsoft 365 eDiscovery and Audit add-on license

Roles

If you want to view the DLP alert management dashboard or to edit the alert configuration options in a DLP policy, you must be a member of one of these role groups:

  • Compliance Administrator
  • Compliance Data Administrator
  • Security Administrator
  • Security Operator
  • Security Reader

To access the DLP alert management dashboard, you need the Manage alerts role and either of the following roles:

  • DLP Compliance Management
  • View-Only DLP Compliance Management

Alert configuration experience

If you're eligible for aggregated alert configuration options, then you see the following options inline in the DLP policy authoring experience.

Screenshot showing options for incident reports for users who are eligible for aggregated alert configuration options.

You can use these alert configuration options to configure a setting that defines how often a DLP rule match can occur before an alert is triggered. This configuration allows you to set up a policy to generate an alert every time an activity matches the policy conditions or when a certain threshold is exceeded, based on the number of activities or based on the volume of exfiltrated data.

If you're eligible for single-event alert configuration options, then you see the following alert configuration option in the DLP policy authoring experience. Use this option to create an alert that's raised every time a DLP rule match happens because of a user activity.

Screenshot showing options for incident reports for users who are eligible for single-event alert configuration options.

DLP alert management dashboard

To work with the DLP alert management dashboard:

  1. In the Microsoft 365 compliance center, go to Data Loss Prevention.

  2. Select the Alerts tab to view the DLP alerts dashboard.

    • Choose filters to refine the list of alerts. Choose Customize columns to list the properties you want to see. You can also choose to sort the alerts in ascending or descending order in any column.

    • Select an alert to see details:

      Screenshot showing alert details on the DLP alert management dashboard.

  3. Select the Events tab to view all of the events associated with the alert. You can choose a particular event to view its details. The following table shows some of the event details.

    Category Property name Description Applicable event types
    Event details
    Id Unique ID associated with the event All events
    Location Workload where the event was detected All events
    Time of activity Time of the user activity that caused the DLP violation All events
    Impacted entities
    User User who caused the DLP violation All events
    Hostname Host name of the machine where the DLP violation was detected Devices events
    IP address IP address of the machine Devices events
    File path Absolute path of the file involved in the violation SharePoint, OneDrive, and Devices events
    Email recipients Recipients of the email that violated the DLP policy Exchange events
    Email subject Subject of the email that violated the DLP policy Exchange events
    Email attachments Names of the attachments in the email that violated the DLP policy Exchange events
    Site owner Name of the site owner SharePoint and OneDrive events
    Site URL Full URL of the SharePoint or OneDrive site SharePoint and OneDrive events
    File created Time of file creation SharePoint and OneDrive events
    File last modified Time of the last modification of the file SharePoint and OneDrive events
    File size Size of the file SharePoint and OneDrive events
    File owner Owner of the file SharePoint and OneDrive events
    Policy details
    DLP policy matched Name of the DLP policy that was matched All events
    Rule matched Name of the DLP rule in the DLP policy that was matched All events
    Sensitive info types detected Sensitive information types that were detected as a part of the DLP policy All events
    Actions taken Actions taken as a part of the matched DLP policy All events
    User overrode policy Whether the user overrode the policy through the policy tip All events
    Override justification text Justification provided to override the policy tip All events
  4. Select the Sensitive Info Types tab to view details about the sensitive information types detected in the content. Details include confidence and count.

  5. After you investigate the alert, choose Manage alert to change the status (Active, Investigating, Dismissed, or Resolved). You can also add comments and assign the alert to someone in your organization.

    • To see the history of workflow management, choose Management log.
    • After you take the required action for the alert, set the status of the alert to Resolved.