Hi,

Ghostery does not sell user data. Ghostery is open source. If you'd like more info, here is a link to our press release:
https://www.ghostery.com/press/ghostery-goes-open-source/

And here is a direct link to our open source code on Github:
https://github.com/ghostery/ghostery-extension

Lastly, here is a link to our FAQ page which will answer any questions you have concerning our parent company, Cliqz, and how we work together to provide browsing security:
https://www.ghostery.com/faqs/

If you have any questions, please don't hesitate to reach out to us via support@ghostery.com.

Happy browsing!
Ghostery Support