This is our anti-tracking tech we include in the Cliqz browser and also in the Ghostery Extension. We have another post lined up in the series on this (in a couple of weeks), but it's also been described in our blog posts[1] and our 2016 paper[2].

[1]: https://whotracks.me/blog/how_cliqz_antitracking_protects_us...

[2]: https://static.cliqz.com/wp-content/uploads/2016/07/Cliqz-St...