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Internet Censorship is a phenomenon that crosses several study fields, from computer networking and computer security to social sciences; together with censorship detection and censorship circumvention it has impact on Internet infrastructure, protocols and user behaviors. Detection of Internet Censorship is the basis for the study of this phenomenon, and recently it has received focus from a technical point of view. Due to the heterogeneity of study fields and approaches, the scientific corpus on these topics is still in need of an overall analysis, based on coherent framework and lexicon to describe the experimented approaches and findings.

In this paper we present a survey on Internet Censorship detection. We propose a reference for censoring techniques and a characterization of censoring systems, with definitions of related concepts. Based on the censoring techniques investigated in literature, we propose an …