Is it possible to block the end user to download the data from ArcGIS Dynamic Map service

[SreejithSreenivasan]

Environment: ArcGIS Server 10.8.1

We would like to prevent the user from downloading data from ArcGIS dynamic map service REST URL.

1. If we uncheck the “Data & Query” capabilities from map capabilities: Does removing the "Data & Query" option from the map capability prevent the user from downloading the data?

2.Is it possible to restrict the user to query the map service with valid where clause names only (means where clause should contains valid field names, reject where clause like 1=1 etc..) 

3.Is there a way to restrict the user to get object ids from the query

Summary: We would like to allow the user to view the map and query the map service with valid inputs but  restrict the underline data download.

[MichaelJenkins]

You mention that you would like the user to be able to view the map and query the map service, so disabling  "Data & Query" would prevent that second part.  If you only required the ability to use an Identify, then you could potentially disable the "Data" capability which would then prevent people from collecting the data via queries.

https://enterprise.arcgis.com/en/server/11.3/publish-services/linux/edit-map-service-settings.htm