Editing World Wide Web (section)

===Deep web===
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| caption2          = Deep web vs surface web
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{{main|Deep web}}
The deep web,<ref name="nhamilton">{{cite journal|url=https://www.iadisportal.org/digital-library/the-mechanics-of-a-deep-net-metasearch-engine|journal=IADIS Digital Library|title=The Mechanics of a Deep Net Metasearch Engine|last=Hamilton|first=Nigel|date=13 May 2024|pages=1034–1036|isbn=978-972-98947-0-1|archive-date=31 May 2023|access-date=6 May 2024|archive-url=https://web.archive.org/web/20230531071443/https://www.iadisportal.org/digital-library/the-mechanics-of-a-deep-net-metasearch-engine|url-status=live}}</ref> ''invisible web'',<ref name="jal">{{cite journal|title=Beyond google: the invisible web in the academic library |volume=30|issue=4|date=July 2004|pages=265–269|last1=Devine|first1=Jane|last2=Egger-Sider|first2=Francine|journal=The Journal of Academic Librarianship |doi=10.1016/j.acalib.2004.04.010 }}</ref> or ''hidden web''<ref name="cthw">{{cite journal|title=Crawling the Hidden Web|journal=27th International Conference on Very Large Data Bases|date=11–14 September 2001|first1=Sriram|last1=Raghavan|first2=Hector|last2=Garcia-Molina|url=http://ilpubs.stanford.edu:8090/725/|access-date=18 February 2019|archive-date=17 August 2019|archive-url=https://web.archive.org/web/20190817174115/http://ilpubs.stanford.edu:8090/725/|url-status=live}}</ref> are parts of the World Wide Web whose contents are not [[Search engine indexing|indexed]] by standard [[web search engine]]s. The opposite term to the deep web is the [[surface web]], which is accessible to anyone using the Internet.<ref>{{cite web |title=Surface Web |url=https://www.computerhope.com/jargon/s/surface-web.htm |publisher=Computer Hope |access-date=20 June 2018 |archive-date=5 May 2020 |archive-url=https://web.archive.org/web/20200505062819/https://www.computerhope.com/jargon/s/surface-web.htm |url-status=live }}</ref> [[Computer scientist]] Michael K. Bergman is credited with coining the term ''deep web'' in 2001 as a search indexing term.<ref name="wright2009"/>

The content of the deep web is hidden behind [[HTTP]] forms,<ref>Madhavan, J., Ko, D., Kot, Ł., Ganapathy, V., Rasmussen, A., & Halevy, A. (2008). Google's deep web crawl. Proceedings of the VLDB Endowment, 1(2), 1241–52.</ref><ref>{{cite web|url=https://www.questia.com/article/1G1-370513892/how-do-you-want-me-to-do-it-does-it-have-to-look|title=How Do You Want Me to Do It? Does It Have to Look like an Accident? – an Assassin Selling a Hit on the Net; Revealed Inside the Deep Web|url-access=subscription|via=|newspaper=[[Sunday Mail (Scotland)|Sunday Mail]]|date=8 June 2014|first=Sam|last=Shedden|access-date=5 May 2017|archive-date=1 March 2020|archive-url=https://web.archive.org/web/20200301174912/https://www.questia.com/article/1G1-370513892/how-do-you-want-me-to-do-it-does-it-have-to-look|url-status=dead}}</ref> and includes many very common uses such as [[web mail]], [[online banking]], and services that users must pay for, and which is protected by a [[paywall]], such as [[video on demand]], some online magazines and newspapers, among others.

The content of the deep web can be located and accessed by a direct [[URL]] or [[IP address]] and may require a password or other security access past the public website page.