Abstract:
Censorship systems such as the Great Firewall (GFW) have been continuously refined to enhance their filtering capabilities. However, most prior studies, and in particular the GFW, have been limited in scope and conducted over short time periods, leading to gaps in our understanding of the GFW’s evolving Web censorship mechanisms over time. We introduce GFWeb, a novel system designed to discover domain blocklists used by the GFW for censoring Web access.