From technology.scmp.com:
Microsoft over the past week has quietly unveiled details about a key new security initiative code-named Palladium, giving the first glimpse into its plan to deliver on its promise of "Trustworthy Computing".
Named after a protective statue of the Greek goddess of wisdom, "Palladium" is being used to describe a broad-based security system for the Windows operating system that will involve both hardware and software.
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Palladium will most likely be an integral part of the next version of Windows, which is code-named "Longhorn".
Full article : http://technology.scmp.com/techbiz/ZZZXFOTX23D.html