In this article published in International Political Sociology Deibert and Rohozinski analyze cyberspace security concepts, which they argue can be divided into two related dimensions, articulated as “risks”: risks to the physical realm of computer and communication technologies (risks to cyberspace); and risks that arise from cyberspace and are facilitated or generated by its technologies, but do not directly target the infrastructures per se (risks through cyberspace). They argue that the contrasts between how governments view the domains has led to contradictory tendencies and paradoxical outcomes.