Because the visibility of the Arc Welder extension (the one that lets you use Android apps on desktop chrome) is set to hidden, which hides it from both Web Store and Google Searches, there are malicious extensions that take advantage of this and will become the top search result for Arc Welder. And if you don't know where to look, it can be very hard to find the real link for Arc Welder. So as a result, these malicious Arc Welders often get many thousands of installs before being taken down. Very frustrating because even if you report them immediately after they are added, it takes a few days to take them down.