zlacker

>>RafelM+(OP)
Honestly It's not a "reasonably secure OS" but an "absurd OS", absurd because for safety we have since few decades a very lightweight and very effective solutions: Plan 9 namespaces.

Actual older than Plan 9 but still alive OSes have done limited and limiting choices but many have something "somewhat equivalent", for instance GNU/Linux cgroups (see FireJail, BubbleWrap etc) or FreeBSD Capsicum. Choosing anything heavyweight is a nonsense.

>>kkfx+Nl
We had far more secure OSes even before Unix.

https://multicians.org/security.html

On X11 and Unix, XTerm's "secure keyboard" input makes X11 snooping impossible.

>>anthk+BK
Well, unix is another really bad OS compared to it's historical predecessors: at first they decide for a bad programming language to need less hw horsepower and separate that cheap language from the user language (C for the system, for "complex" things, shell scripts for the end user), for equal reasons they decide that's no need for GUIs, while far before unix we have had GUIs, touch monitor, even the world first video-conference with screen sharing in LAN (the so called Mother of all the Demos, in 1968 [1] then they realize that's was not that good and graphic systems start to appear on Unix, far limited, complex, that completely violate unix principles since for GUIs there were no IPCs, classic PostScript GUIs do support some user-programming but not really something like classic systems, CDE support a certain integration but again nothing like classic systems.

Since them all "modern" systems keep rediscovering in limited, limited and bug ridden ways what historical systems have done far better decades before...

I think many should just see classic advertisement like https://youtu.be/M0zgj2p7Ww4 than see it's date and where we are today...

It's not only security it's the overall design. In the past hw resources was limited an so hacks and slowness were common, hw itself being "in a pioneering phase" was full of hacks and ugliness but evolving those systems would have led us too the moon while we are still in the middle age...

[1] https://youtu.be/yJDv-zdhzMY