Supposedly, Chrome Web Store is hosting more than 200k browser extensions by now and adding 400-500 new ones every day. I wonder how many of these are malicious. 60%? 80? 90?
It’s definitely most them. My research has shown that malicious actors will spam Chrome Web Store with many very similar submissions. Since their goal is to direct attention away from legitimate add-ons offering the same functionality this strategy is unsurprising. The end result is that if Google ever succeeded removing malicious submissions they would be left with far fewer add-ons to manage.
One indicator is: Chrome Web Store only hosts somewhat more than 60k themes. Themes are much simpler to create than extensions, so one would expect there to be considerably more themes than extensions. That was definitely the case on Mozilla Add-ons back when “lightweight themes” were introduced – the number of available themes skyrocketed. Even now Mozilla Add-ons has more themes than extensions. But themes don’t allow extracting user data…

