This is a genuine D-Notice, not complete, which was sent to the press on 07/06/2013 concerning Prism, the electronic surveillance program.
Just so you know what they look like.
Private and Confidential: Not for publication, broadcast or use on social media.
Defence Advisory Notice
There have been a number of articles recently in connection with some of the ways in which the UK Intelligence Services obtain information from foreign sources.
Although none of these recent articles has contravened any of the guidelines contained within the Defence Advisory Notice System, the intelligence services are concerned that further developments of this same theme may begin to jeopardize both national security and possibly UK personnel…