Wikipedia article
Deep web
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This article is about the part of the World Wide Web not indexed by traditional search engines. For other uses, see Deep web (disambiguation).
Not to be confused with Dark web.
The deep web,[1] invisible web,[2] or hidden web[3] are parts of the World Wide Web whose contents are not indexed by standard web search-engines. The opposite term to the deep web is the "surface web", which is accessible to anyone/everyone using the Internet.[4] Computer-scientist Michael K. Bergman is credited with coining the term deep web in 2001 as a search-indexing term.[5]
The content of the deep web is hidden behind HTTP forms[6][7] and includes many very common uses such as web mail, online banking, private or otherwise restricted access social-media pages and profiles, some web forums that require registration for viewing content, and services that users must pay for, and which are protected by paywalls, such as video on demand and some online magazines and newspapers.
The content of the deep web can be located and accessed by a direct URL or IP address, but may require a password or other security access to get past public-website pages.
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Terminology Edit
The first conflation of the terms "deep web" with "dark web" came about in 2009 when deep web search terminology was discussed together with illegal activities taking place on the Freenet and darknet.[8]
Since then, after their use in the media's reporting on the Silk Road, many[9][10] people and media outlets have taken to using 'deep web' synonymously with the dark web or darknet, a comparison some reject as inaccurate[11] and consequently has become an ongoing source of confusion.[12] Wired reporters Kim Zetter[13] and Andy Greenberg[14] recommend the terms be used in distinct fashions. While the deep web is a reference to any site that cannot be accessed through a traditional search engine, the dark web is a portion of the deep web that has been intentionally hidden and is inaccessible through standard browsers and methods.[15][16][17][18][19]