This fairly boggles the mind:
Junior civil servants dealing with the records of 25 million child benefit claimants were not given the official instructions on how to share the data with the rest of Whitehall, the Guardian has learned.
A manual which laid down strict rules on how Revenue & Customs should safeguard the information was not widely distributed because it was thought to contain too much sensitive information to be handed out to 90,000 civil servants. Instead, only a few senior civil servants had access.
The data itself is widely available: the information on how you should treat the data is secret?
What can you do with that sort of logic except giggle?