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The dark web is the World Wide Web content that exists on darknets: overlay networks that use the Internet but require specific software, configurations, or authorization to access.[1][2] Through the dark web, private straphanger networks can communicate and conduct business anonymously without divulging identifying information, such as a user's location.[3][4] The dark web forms a small part of the deep web, the part of the Web not indexed by web search engines, although sometimes the term deep web is mistakenly used to refer specifically to the dark web. The darknets which constitute the dark web include small, friend-to-friend peer-to-peer networks, as well as large, popular networks such as Tor, Freenet, I2P, and Riffle operated by public organizations and individuals.[6] Users of the dark web refer to the regular web as Clearnet due to its unencrypted nature.[7] The Tor dark web or onionland[8] uses the traffic anonymization technique of onion routing under the network's top-level domain suffix .onion. Darknet websites are accessible only through networks such as Tor ("The Onion Routing" project) and I2P ("Invisible Internet Project").[12] Tor browser and Tor-accessible sites are widely used among the darknet users and can be identified by the domain ".onion".[13] While Tor focuses on providing anonymous access to the Internet, I2P specializes in allowing anonymous hosting of websites.[14] Identities and locations of darknet users stay anonymous and cannot be tracked due to the layered encryption system. The darknet encryption technology routes users' data through a large number of intermediate servers, which protects the users' identity and guarantees anonymity. The transmitted information can be decrypted only by a subsequent node in the scheme, which leads to the exit node. The complicated system makes it almost impossible to reproduce the node path and decrypt the information layer by layer.[15] Due to the high level of encryption, websites are not able to track geolocation and IP of their users, and users are not able to get this information about the host. Thus, communication between darknet users is highly encrypted allowing users to talk, blog, and share files confidentially.