The document defines the darknet as a computer network with restricted access that is used for illegal file sharing and contains web content not indexed by standard search engines. It is also known as the deepnet, invisible web, or hidden web. The darknet exists due to technical barriers or deliberate decisions by site owners to exclude pages from search engines. While the darknet gives the idea that hidden information is available, users must dig deep to find it. The document also notes that the darknet can provide business advantages by allowing access to valuable customer information and insights not easily found by competitors. It predicts the darknet will continue to grow as more databases and documents are created and secured.