CLIP OS – France’s cybersecurity agency’s open source, secured operating system
> It also provides partitioning mechanisms that make it possible to simultaneously process public and sensitive information on the same computer, within two completely isolated software environments, in order to avoid the risk of sensitive information leaking onto the public network.<p>Just don't.  Please don't. You can have the most sane architecture, but there's a whole pile of s..tack underneath. You can't even trust a modern CPU.