is a well-known network of streaming websites—originally based in Vietnam—that allows users to watch films and TV shows for free. Because these sites often host copyrighted content without authorization, they are frequently shut down and replaced by various "clones" or proxy sites.
You might be looking for a scholarly "paper" analyzing the legal, technical, or social impact of pirate streaming sites like 123Movies. 123movies
If you are looking for information related to "paper" or research regarding 123Movies, here are a few possibilities of what you might have intended: 123movies