[cyphar]

If you are running on Linux, then Firefox is built by your distribution. So attacks like that are much harder to accomplish, because the distribution of software like Firefox is (for lack of a better word) distributed. I'm not going to get into all of the techniques that distributions use to make these things safer, the crux of the point is that you should always use distribution packages because we generally have much better release engineering than upstream (as we've been doing it for longer).