- A network of 24 media extensions that are installed on 800,000 users and collected viewing data and demographic information on major streaming platforms such as Netflix, Hulu, Disney+, Amazon Prime Video, HBO, Apple TV, and others
- 12 separate ad blockers with a combined install base of over 5.5 million users openly selling user data
- Nearly 50 other extensions, with over 100,000 users in aggregate, that collected and resold users’ browsing data



There are darkmode extensions for firefox. Or do you like to use your own?
Yeah. I try to keep the number of regular extensions low for security and privacy reasons.
You can probably port it to a userscript without much trouble, and then you can use it in every browser using a single extension/addon along with other userscripts (which you can easily read the source code and disable auto updates of). I use Violentmonkey and have written a few scripts. Development and usage is easier than extensions/addons for personal stuff.
Personally I just use Dark Reader though.
I looked at a few (3?) monkey extensions (including violentmokey). I don’t remember the details but I think there were issues with all of them (probably privacy issues).
Dark Reader works great, I’ve used it for years on firefox