> it means the update signing key has been compromised. The odds that parties outside of Microsoft have access to their update signing key is actually seems pr

> it means the update signing key has been compromised. The odds that parties outside of Microsoft have access to their update signing key is actually seems pretty likely given the Snowden revelations. Consider the Stuxnet distribution strategy -- what a boon it'd be to be able to deploy that sort of machine-specific payload via the built-in update kit.