The Bloomberg report was probably incomplete - I think it would be unbelievable if the reported board hack has not taken place but equally well, it's very unlikely that it was a generalized as some of the published stories have suggested. And I'd be very surprised if the hacked boards did not contain a method of making the hack "vanish" too - if you are going to play these sort of tricks then you would be strongly advised to include a switch to cover your tracks.
I'm not being paranoid, just realistic - it's very unlikely that we'll ever know the truth.
Biting the hand that feeds IT
