[fjsolwmv]

Remember when Microsoft Outlook used to automatically execute programs sent to you in email?

[FRex]

I'm not that old but I'd bet that it wasn't received well and caused infections and that's why it 'used to' and doesn't anymore.

A similar thing is with ldd (I don't know if this still works and can't search or check right now): https://news.ycombinator.com/item?id=902958