This book explores the topic of global cyberspace. Digital infrastructure is increasingly the backbone of prosperous economies, vigorous research communities, strong militaries, transparent governments, and free societies. As never before, information technology is fostering transnational dialogue and facilitating the global flow of goods and services. These social and trade links have become indispensable to our daily lives. Critical life-sustaining infrastructures that deliver electricity and water, control air traffic, and support our financial system all depend on networked information systems. Governments are now able to streamline the provision of essential services through eGovernment initiatives. Social and political movements rely on the Internet to enable new and more expansive forms of organisation and action. The reach of networked technology is pervasive and global. For all nations, the underlying digital infrastructure is or will soon become a national asset.