Follow the instructions in this article to investigate a file that's been shared externally by a specific user in your organization.
Note: Some features in the security investigation tool—for example, data related to Gmail and Drive—are not available with Cloud Identity Premium or Enterprise Standard editions. For details see Data sources in the investigation tool.
Your access to the security investigation tool
- Supported editions for the security investigation tool include Enterprise Plus, Education Standard, Education Plus, and Enterprise Essentials Plus.
- Admins with Cloud Identity Premium, Frontline Standard, Enterprise Standard, and Education Standard can also use the investigation tool for a subset of data sources.
- Your ability to run a search in the investigation tool depends on your Google edition, your administrative privileges, and the data source. If you're unable to run a search in the investigation tool for a specific data source, you can use the audit and investigation page instead. For more information, go to Improved audit and investigation experience.
- You can run a search in the investigation tool on all users, regardless of the Google edition they have.
Investigate file sharing1. Get started with your investigation
- Sign in to use the investigation tool.
- From the Data source menu, click Drive log events.
- Click Add Condition.
- From the Condition menu, click Visibility change.
- Make sure the condition is set to External.
- Click ADD CONDITION.
- From the Condition menu, click Actor.
- In the User field, enter the username of the user who shared the file—for example, email@example.com.
- Click ADD CONDITION.
- From the Condition menu, click Date.
- Change the condition to After.
- In the Date field, enter the earliest date and time when the file may have been shared externally.
- Click SEARCH.
After you finish the above steps, the search results are displayed in a table at the bottom of the page. The table displays the date and time the file was shared externally, the document ID, document type, visibility, the title, the event type (for example, Change user access), the actor's username, and the owner of the document.
(The actor is the user who changed the visibility of the document in some way.)
To save these search results to your My Drive folder, click Export all at the top of the table.
For more details, see View search results in the investigation tool.