Maybe it is a whoops, may be it is not. What comes to mind is the British Intelligence operation during WWII designed to fed the Germans false documents to divert their attention from the planned invasion of Sicily, if memory serves. It worked like that: the Brits put a corpse dressed in a military uniform on a plane, placed a brief case with the false military plans next to him and arranged for what looked like a plane crash in the coastal waters of Spain. Then they vigorously demanded that the Spanish gov't immediately returns the wreck with its contents. The Spaniards complied but before they let their German friends to snoop around. The Krauts happily seized the opportunity of what looked like a major security breach on the part of the Brits only to learn later that it was them who were taken for a ride.
wojtek