Many fake activation tools ask for administrator/sudo permissions. Once granted, they can steal:

Feature: License Key Leak Detector for GitHub

If you're looking for free or open-source alternatives to Visual Paradigm, you can explore:

Occasionally, a well-meaning user posts a dummy key inside a tutorial or test project. These keys are usually expired trial keys and will not work.

: Academic or professional projects where Visual Paradigm was used to design system architectures, with the diagrams stored in the repository. Official License Acquisition