By Tom Chivers
05 Oct 2009
The Defence Manual of Security is intended to help MoD, armed forces and
intelligence personnel maintain information security in the face of
hackers, journalists, foreign spies and others.
But the 2,400-page restricted document has found its way on to
Wikileaks, a website that publishes anonymous leaks of sensitive
information from organisations including governments, corporations and
Known in the services as Joint Services Protocol 440 (JSP 440), it was
published in 2001. As Wikileaks notes, it is the document that is used
as justification for the monitoring of certain websites, including
Under the section "Leaks of Official Information", it says: "Leaks
usually take the form of reports in the public media which appear to
involve the unauthorised disclosure of official information (whether
protectively marked or not) that causes political harm or embarrassment
to either the UK Government or the Department concerned.
"The threat [of leakage] is less likely to arise from positive acts of
counter-espionage, than from leakage of information through disaffected
members of staff, or as a result of the attentions of an investigative
journalist, or simply by accident or carelessness."
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