That's an artful way to say that Microsoft's security concerns were -- and are -- elsewhere: Hackers tampering with the cameras to intercept the stream to spy on users, going up the stack to the console or network.

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You need a classy pie chart, or a 3D graphic of a software-stack or one of those social network symbols with a circle and branches coming out of it.

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They enable water to be pumped in a network that runs between the horizontal layers of a stack and the thousands of vertical interconnections that carry information between its layers.

ECONOMIST: Monitor