The Tallinn Manual
The ‘Tallinn Manual on the International Law Applicable to Cyber Warfare’ is the outcome of three years’ work by an independent group of international law experts - scholars and practitioners - on the application of existing norms of international law to cyber warfare. It is made up of rules of customary international law developed and adopted by the group of experts, annotated with commentary. It is available free of charge on the website of NATO’s Cooperative Cyber Defence Centre of Excellence (CCD COE); it was also published by Cambridge University Press, in 2013.