How to block an application from sending my project files to servers

The question about securing your projects and intellectual property.
Literally I need an EXE file to be blocked from accessing and uploading my project files to any server for any purpose because I suspect possible violation of my intellectual property. This EXE file is a satellite service of my main application, it does updates etc and I don’t see why it can’t upload my projects for further selling or using it.

Is it ok to create a group of protected folders and just add it to the blocked list for each suspicious process? Or even just leave such processes as “unrecognized” and they won’t access my protected files?