[nickodell]

That seems like a lot of work. What would be the point of that?

If Amazon is being spied on by foreign intelligence, wouldn't the NSA want Amazon to know about it? Particularly since government data is hosted on Amazon's servers.

[Zeklandia]

Because now the NSA has a strategic foothold. If they acknowledge the hack, then the adversary will move on to something else. If they don't acknowledge it, they can secretly mitigate it, by feeding false data, for example, and waste the adversary's time.