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Deep web and dark web

This presentation deals with the deep web and dark web.

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Presented by:
VAISHALI MISRA
CONTENTS
INTRODUCTION
SURFACE WEB
HISTORY
WORKING OF SEARCH ENGINES
APPLICATIONS
DARK WEB
TOR BROWSER
ADVANTAGES
DISADVANTAGES
CONCLUSION
INTRODUCTION
 The Web is the common name for the World Wide Web, a
subset of the Internet consisting of the pages that can be
accessed by a Web browser.
 Web is divided into two main parts
surface web
 Deep web
 Dark web is small part of deep web.
 Only 4% of web content is available via search engine
 Approximately 96% of the digital universe is on Deep web
sites protected by passwords.
SURFACE WEB
 The surface Web is that portion of the World Wide Web that
is readily available to the general public and searchable with
standard web search engines.
 It is also known as the Clearnet, the visible Web or indexable
Web.
 A traditional search engine sees only a small amount of the
information that's available
SURFACE WEB CHARACTERISTICS
Distributed data
High Volatility
Large volume
Unstructured data
Quality of data
Heterogeneous data
DEEP WEB
 The Deep Web is World Wide Web content that is not part of
the Surface Web, which is indexed by standard search
engines.
 It is also called the Deepnet, Invisible Web or Hidden Web.
 Largest growing category of new information on the Internet.
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Deep web and dark web

  • 2. CONTENTS INTRODUCTION SURFACE WEB HISTORY WORKING OF SEARCH ENGINES APPLICATIONS DARK WEB TOR BROWSER ADVANTAGES DISADVANTAGES CONCLUSION
  • 3. INTRODUCTION  The Web is the common name for the World Wide Web, a subset of the Internet consisting of the pages that can be accessed by a Web browser.  Web is divided into two main parts surface web  Deep web  Dark web is small part of deep web.  Only 4% of web content is available via search engine  Approximately 96% of the digital universe is on Deep web sites protected by passwords.
  • 4. SURFACE WEB  The surface Web is that portion of the World Wide Web that is readily available to the general public and searchable with standard web search engines.  It is also known as the Clearnet, the visible Web or indexable Web.  A traditional search engine sees only a small amount of the information that's available
  • 5. SURFACE WEB CHARACTERISTICS Distributed data High Volatility Large volume Unstructured data Quality of data Heterogeneous data
  • 6. DEEP WEB  The Deep Web is World Wide Web content that is not part of the Surface Web, which is indexed by standard search engines.  It is also called the Deepnet, Invisible Web or Hidden Web.  Largest growing category of new information on the Internet.
  • 7. DEEP WEB CHARACTERISTICS Dynamic webpages Searchable databases Private web Limited access to web
  • 8. HISTORY  Jill Ellsworth used the term invisible Web in 1994 to refer to websites that were not registered with any search engine.  Mike Bergman cited a January 1996 article by Frank Garcia: “It would be a site that's possibly reasonably designed, but they didn't bother to register it with any of the search engines. So, no one can find them! You're hidden. I call that the invisible Web”.  The first use of the specific term Deep Web, now generally accepted, occurred in the aforementioned 2001 Bergman study.
  • 9. WORKING OF SEARCH ENGINES  Search engines construct a database of the Web by using programs called spiders that begin with a list of known Web pages.  The spider gets a copy of each page and indexes it, storing useful information that will let the page be quickly retrieved again later.  Eventually all reachable pages are indexed, unless the spider runs out of time or disk space.  The collection of reachable pages defines the Surface Web.
  • 11. APPLICATIONS  The internal sites of major companies, associations, and trade organizations  The school, college, and university intranet systems  Access to online databases  Password-protected websites with members-only access  Timed access pages such as those found on online test-taking sites  An individual’s personal account for social media, email, banking, and more
  • 12. DARK WEB  Dark Web is the Web content that exists on darknets.  Darknets are overlay nets which use the public Internet but require specific SW or authorization to access Delivered over small peer-to-peer networks As hidden services on top of Tor  The Dark Web forms a small part of the Deep Web, the part of the Web not indexed by search engines
  • 13. TOR BROWSER  Tor is software that installs into your browser and sets up the specific connections you need to access dark Web sites.  Critically it is free software for enabling online anonymity and censorship resistance.  Onion routing refers to the process of removing encryption layers from Internet communications, similar to peeling back the layers of an onion.
  • 14. ADVANTAGES  There is a wide range of people that benefit from the Deep Web’s capability to allow anonymous use and communication. Listed below are individuals or groups who have benefitted from the Deep Web Journalists and Whistleblowers Political Protesters, and Anti-Censorship Advocacy Groups Residents of Oppressive Political Regimes
  • 15. DISADVANTAGES  Deep Web search engines tend to be slower than standard search engines.  Searching the Deep Web also requires a more precise search string.  Deep Web searches should be reserved for serious, painstaking research, not for simple questions and basic Web surfing.  Deep Web searches may also return sensitive personal information from normally restricted databases.  creating ethical dilemmas and leaving individuals susceptible to fraud and identity theft.
  • 16. CONCLUSION  The Web is a major source of information for both criminal and legal investigation activities.  The Web content that is typically accessible through conventional search engines is named the Surface Web and represents only a small fraction of the whole Web.  The Deep Web includes the largest bulk of the Web, a small part of it (the Dark Web), being used specifically for carrying out criminal activities.