> Cache and out of order buffers (speculation) is what is behind latest security issues. That's one way to look at it. Another is that opaque CPU designs are a

> Cache and out of order buffers (speculation) is what is behind latest security issues. That's one way to look at it. Another is that opaque CPU designs are a big issue (at least for meltdown, which is a bug; spectre is more of a broken design philosophy).