20. The nefarious section of the Deep Web is called the Dark Web.
The Dark Web is considered, as the name implies, the darkest of the family. Users need special access software (the Tor browser, in most cases) to explore even a bit of it.
Among its most “popular” service categories are: Drugs, Fraud, Bitcoin, Black Market Sites, Hacking, Blogs, Pornography, and Abuse. However, the Dark Web is also used for activism, whistleblowing, and free speech, so it’s not all black or white.