I heard about that last one on a podcast and it was the first thing I thought of when I saw this post. Genuinely interesting story (if you’re into that sort of thing). The pod was saying how it’s both a flaw of open source that it could happen that way and an advantage because it was discoverable due to the fact that the code is open source.
Vista. Why the change to Linux? See previous answer.
https://shows.acast.com/the-404-media-podcast
Episode 32