It was the _unknown_ message... :-)
Actually, "hidden" is far more correct than "unknown", but that's what RSA
chose to call it.
--
Nothing is more dangerous for man's private morality than the habit of
commanding. The best man, the most intelligent, disinterested, generous,
pure, will infallibly and always be spoiled at this trade.
-- Mikhail A. Bakunin (thanks to Rabbi Albert Axelrad)