Darknet is a subset of the Internet where the sites are unindexed and accessible only through the onion router (TOR) network. Researchers at Bat Blue Networks released a report outlining the main actors and activities on the Darknet. They found a wide assortment of criminal marketplaces — for human trafficking, murder, child pornography, and murder. Government agencies were among the buyers of Darknet, the report says. A library in Lebanon, N.H. recently took down the TOR node after it became the first library to allow its visitors to access the darknet.”]
Source: https://www.darkreading.com/analytics/darknet-is-full-of-criminals-governments-giving-tor-a-bad-name