A darknet may refer to any of the following:
1. Darknet is a private P2P file sharing network in which only trusted peers make connections to access the dark web. The sharing is anonymous, as IP addresses are not shared publicly. Darknets are often thought of to be associated with illegal activities or other activities where the users would not want government or other involvements.
2. Darknet is another name for a network telescope, a system where a person can look at activities on the Internet. More specifically, the activities are traffic that targets any unused (dark) address space on a network, which is typically suspicious. Using a network telescope can help identify if there are any network attacks in progress or being attempted.
3. The darknet is also a term sometimes used to describe the deep web.