The United Kingdom's Intellectual Property Office commissioned two consultants to undertake an international comparison of approaches to online copyright enforcement. The aims and objectives of the research were to establish the range of different approaches currently being adopted around the world to enforce copyright in the online environment; and the strengths and weaknesses of different approaches and to what extent enforcement approaches are perceived to be working to reduce infringement levels. The countries chosen for inclusion in the research were as follows: United Kingdom, United States, Canada, France, the Netherlands, Spain, Italy, Brazil, and South Korea. This book discusses the final report on the international comparison of approaches to online copyright infringement. It also provides the 2014 out-of-cycle review of notorious markets and examines safe harbor for online service providers.