1. How does the deep web work?
A Pech Kucha by Hassan Almass

2. First you need to known that there are three layers of WWW
1. Surface Web 2.Deep web 3.Dark web

3. Surface Web:
The websites which are found in search engines. In which we can directly access websites. Indexed by search engines.

4. Deep web:
These sites which are hidden from the users and search engines. The links which are directly provided to the users who are eligible to access for example they are provided with authentication details which are to be used in the given link. For example access to banking records, corporate database and medical files. Deep web is obviously not indexed by search engines.

5. Dark web:
The Dark Web is a term referring to websites and networks that are heavily encrypted and “hidden” from the average internet user. There are a lot of reasons people do this, but the Dark Web has earned a connotation as a sort of immense black market, one associated with drugs, guns, hacking, and conspiracies.
That said, it’s also a haven for those who really, really like their privacy and aren’t fans of any kind of interference. It’s commonly used for those under strict governments that control free speech and employ heavy regulations.

6. So, it is separate form the normal internet?
More or less, yes. The data itself still uses the same channels, but the walls of encryption put a clear divide between “normal” internet content and the Dark Web. You cannot hop onto your favorite browser and visit a Dark site any time you want, for instance. Traditional search engines like Google also tend not to index or show any Dark Web content, for a variety of reasons.

7. How is the Dark Web different from the Deep Web?
While the terms are sometimes used interchangeably, there’s an important difference: The Deep Web refers to all parts of the web that are hidden away from the average user and not indexed by the average search engine. This includes an immense amount of data, internal copies of various web pages and anything that you need an access code to reach.
So, pretty much every site online has some content that’s in the Deep Web, out of necessity. The Dark Web is only a small part of the Deep Web, with a more focused purpose.

9. Conclusion
To summarize, the part of the internet that is publicly searchable and accessible is called the surface web. The deep web, however, is an area of the internet where websites are not indexed and cannot be found through regular search engines or might require authorization for access. The Dark Web, is a part of the Deep Web that needs specific security mechanisms supporting anonymity to be in place to allow access to its sites and pages; for instance, privacy networks like Tor, or peer-to-peer networks like I2P. It is important to acknowledge the thriving markets for sensitive information on the Dark web, and also, the dispersion of this information on the Deep Web. To completely protect all aspects of an organization, the deep and Dark web must be included in the threat scopes.