[pjc50]

If they can demonstrate an audit log of every admin who has escalated their permission to logon to the container of your data and access it, including the files they accessed, would that be good? (Because they do that.)

They are legally prevented from showing you such an audit log if a National Security Letter is involved.

[simoncion]

And -unless there have recently been great strides in the NSL gag order battle- they are legally prevented from indicating to you that you or your data has been targeted by an NSL.