Via Bruce Schneier, a demonstrably incompetent police chief in the UK has resigned after mishandling a secret document:
Police were forced to carry out raids on addresses in the north-west of England in broad daylight yesterday, earlier than planned, after [Bob] Quick, the Metropolitan police's assistant commissioner [and senior-most counter-terrorism official], was photographed carrying sensitive documents as he arrived for a meeting in Downing Street.
A white document marked "secret", which carried details of the operation being planned by MI5 and several police forces, was clearly visible to press photographers equipped with telephoto lenses.
Yesterday, realising the existence of the photographs of the document – which included the names of several senior officers, sensitive locations and details about the nature of the overseas threat – the government imposed a "D notice" to restrict the media from revealing the contents of the picture.
The Guardian article has a photo of the document, taken as Quick got out of his car.
Police also revealed that Quick's Windows password was "bob1" and that he routinely leaves his keys in his car "so [he'll know] where to find them."