Hackers activate automatic defrosting in supermarket fridges across Europe - https://news.ycombinator.com/item?id=50055304 - Oct 2026 (1007 comments)
I think the military commissary's freezers were hacked - https://news.ycombinator.com/item?id=49508506 - Aug 2026 (239 comments)
The comments in the Aug 26 thread aged quite badly.