Operating system - Security Design

Does anyone here have any really good ideas for a new operating systems security?

Just so you know, its DOS based (for now),
But I need a little help.

So, whether you burn me, or help,
Thanks in Advance:goatee:

make it multi-user, have permissions, check for buffer overruns, you know, all the usual stuff…

This probably isn’t the best place to ask though - I don’t think too many people here are skilled in OS design :wink:

Why not make it linux-based? Doesn’t linux meet some orange book spec for security?