Hello,
On feature services there is the 'extract' capability. However, even disabling the option, users are able to download data from third-part softwares like QGIS.
Steps to reproduce:
- Publish a feature on the portal
- Disable extract capability
- With QGIS add the feature and export the data
The Bug BUG-000089531 describes a similar behavior on ArcGIS Desktop:
Be unable to extract data is very important for govenance strategies.
Thank you,
Rafael Casagrande