The Internet has become a crucial part of modern society’s life due to its ability to facilitate communication and structure contemporary society. Indonesia has not been left out of this global phenomenon. The Internet came to Indonesia in 1983 and its usage has continued to expand ever since, especially within institutions of learning and in the government sector. The study of radical websites must be situated within the development of the Internet in Indonesia in general instead of being examined by itself. The impact of certain activities such as cyberterrorism must then be examined in perspective, given the vast expanse of Indonesia as an archipelago and the resulting difficulties in linking the entire country to the Internet. This article seeks to trace the development of the Internet in Indonesia and examine the resulting impact on the reach of the radical Bahasa Indonesia Islamic websites in the Indonesian Archipelago and beyond. It also highlights typical narrative and operations of the radical websites, which serves to distinguish them from radical websites from elsewhere, such as the Middle East.