[mlinksva]

I tend to agree though the conventional response I'd guess also has merit: "secure" isn't binary and various mitigations deployed on non-capability-based operating systems change the economics of attack/defense and are valuable.

But the main reason I'm responding is to thank for the TIL about data diodes https://en.wikipedia.org/wiki/Unidirectional_network which seem under-discussed and under-utilized. Only a handful of discussions on HN, most substantial (only 19 comments) from 10 years ago https://news.ycombinator.com/item?id=10213836 if I understand correctly, only used in very high security environments, but plausibly could be used in many applications that don't really need to be connected for input but could just broadcast or vice versa (many IoT devices). Thank you, thought provoking!