Remind me of a bug I encountered working on IoT industrial control systems a couple of years ago, a newly graduated coworker couldn’t make sense of some network traffic from a PoE Ethernet powered sensor, wireshark weren’t picking up whatever was happening and a router we were using kept locking up if we triggered the bug. We ended up debugging it with an oscilloscope and where I could clearly see the bad packets which didn’t show up in wireshark, in any dumps or software taps. I don’t remember what it was but, this was 5+ years ago but I think it might have been some sort of malformed broadcast packet causing havoc when it penetrates networks. There’s something especially satisfying in decoding TCP or UDP packets with an oscilloscope.
I was kinda expecting the story to not be fictional but rather a ambitious write up of some particular involved malicious code. Kinda like stuxnet which was harmless in most cases but infects certain programming environment and infects the code it produced without showing up in source.