NATO Cooperative Cyber Defence Centre of Excellence

Acronym: CCDCOE

Established: 2008

Address: Filtri tee 12, 10132 Tallinn, Estonia


NATO Cooperative Cyber Defence Centre of Excellence (CCD COE) is a NATO-accredited research and training facility dealing with education, consultation, lessons learned, research and development in the field of cybersecurity.

The Centre is open to all NATO member states, but cooperation projects are also conducted jointly with NATO’s partner countries, academia and the private sector.

The Centre’s current sponsoring nations are:

The Centre’s current contributing participants are:

23px Flag of Austria.svg Austria23px Flag of Ireland.svg Ireland23px Flag of Sweden.svg Sweden
23px Flag of Australia %28converted%29.svg Australia23px Flag of Japan.svg Japan16px Flag of Switzerland %28Pantone%29.svg  Switzerland
23px Flag of Finland.svg Finland23px Flag of South Korea.svg South Korea23px Flag of Ukraine.svg Ukraine

The CCD COE’s ‘Tallinn Manual‘ is a very detailed and elaborate study of how international law applies to cyberspace with regard to warfare. It was written at the invitation of the Tallinn-based NATO Cooperative Cyber Defence Centre of Excellence and published by Cambridge University Press. The manual and its follow-up, the Tallinn Manual 2.0, have become influential resources for legal advisers and policy experts dealing with cyber issues. The Tallinn Manual 2.0, released in February 2017, expands the scope of the original manual and analyzes how international legal principles can be applied to cyber operations.