As you build your Power BI reports, you may want to use maps and custom visuals. Have you thought about data privacy and what data is getting shared by those visuals? If you have sensitive data in your reports, you will probably want to look into this.
Most built-in visuals do not share data externally. But the default map visuals in Power BI need to share data with Bing Maps in order to geocode data points. Microsoft has documented that what is shared depends on the map type and the type of location data used.
For bubble maps, no data is sent to Bing if you are using only longitude and latitude. Otherwise, any data in the Location and filter buckets is sent to Bing.
For filled maps, data in the Location, Longitude, and Latitude buckets is shared with Bing.
For ArcGIS maps, Esri staff have said “Only the data needed to geocode the address (i.e., fields placed in the Location field well) are passed to Esri servers. These data are only used to generate the information used to place the locations on the map and they are not stored by Esri servers.”
Custom visuals are created by developers using the custom visuals SDK. There are 3 ways to deploy custom visuals for use by report builders:
- Sharing a .pbiviz file
- Adding to the organizational visuals tenant repository
- Having users download visuals from the marketplace (AppSource)
When you receive and use a .pbiviz file, you are taking responsibility for assessing data security. When your Power BI admin deploys a custom visual to the organizational visuals repository, they are approving the visual for use inside your organization.
If you are using visuals from the marketplace, you will need to check the information provided about data privacy, and it’s not all that straightforward at the moment.
One thing that makes understanding data privacy in custom visuals easier is the designation of a certified custom visual. One of the requirements for certification is ” Does not access external services or resources, including but not limited to, no HTTP/S or WebSocket requests go out of Power BI to any services.”
You can find the list of currently certified custom visuals on this page. Custom visuals are also identified in the marketplace by a blue star with a check mark.
Uncertified visuals are not necessarily less secure than custom visuals, but they have not been tested by Microsoft to confirm security. Any random person can create a custom visual, which is pretty cool and also potentially dangerous for data security.
Microsoft has tried to remind you of this in App Source. On each visual that is not certified, you will see a notice, such as the one below.
This is helpful, but there are a couple of problems.
- This information is at the bottom of the the visual description. Once you select a visual from the list, you most likely need to scroll down to see this note.
- This is generic, boilerplate language added by AppSource. They are basically saying that it is possible that the visual might send data over the internet. They are not telling you that it definitely does.
What Have We Learned?
Determining what data is sent externally by a custom visual is not simple. While many visuals are sandboxed and do not communicate externally, some of them do, and any uncertified custom visual might.
Custom Visual Creators
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