The only data that the addon uses and saves is locally stored.
The stored information contains:
The amount of streams blocked since the installation of the addon
A list of streamers and the amount of times they were blocked on a website.
A list of websites on which the addon should be active.
Furthermore, the addon only checks the incoming html body and network requests to filter out the embedded iframes and the corresponding HTTP requests. This all done locally and no 3rd party server or application is involved.
