Editing Counterintelligence (section)

===Counter-OSINT (Open-Source Intelligence)===
While the concept well precedes the recognition of a discipline of [[OSINT]], the idea of [[Censorship#State secrets and prevention of attention|censorship of material directly relevant to national security]] is a basic OSINT defense. In democratic societies, even in wartime, censorship must be watched carefully lest it violate reasonable freedom of the press, but the balance is set differently in different countries and at different times.

The [[United Kingdom]] is generally considered to have a very free press, but there is the [[DA-Notice|DA-Notice, formerly D-notice]] system. Many British journalists find that the system is used fairly, but there will always be arguments. In the specific context of counterintelligence, note that [[Peter Wright (MI5 officer)|Peter Wright]], a former senior member of the [[MI5|Security Service]] who left their service without his pension, moved to [[Australia]] before publishing his book [[Spycatcher]]. While much of the book was reasonable commentary, it revealed some specific and sensitive techniques, such as [[Operation RAFTER]], a means of detecting the existence and setting of radio receivers.