The relationship between science, technology and the security has been a topic of longstanding concern, one given renewed salience since September 11th 2001. The pace and breadth of scientific and technological developments are often seen as challenging the viability of systems of governance. 'Technology' in its broadest sense factors into most security problems and proposed solutions. Yet, across many academic fields and policy discussions, the understanding of technology remains fairly under-developed. Technology and Security is designed to take forward the existing state of understanding where security and technology intersect. Its principal objective is to assess the challenges posed by emerging scientific and technological developments for security while understanding how perceptions of security threats are themselves formed in relation to conceptions of science and technology. It consists of contributions from academics and military practitioners utilizing theories and perspectives across political science, international relations, history, sociology, science and technology studies, and security studies.