Deep Web also has a start, more precisely in the US Army seeking to communicate with those across the border without being detected. Thus in 1995 appeared the concept of "onion routing", and later The Onion Router Project or TOR.
In 2004, the TOR project was made public and two years later, the service that is still functioning today is a gateway to the Deep Web.
Onion routing is based on the principle of passing an IP address through multiple nodes until it reaches the site it wants to reach. So, trying to source the IP, you'll be knotting from one node to another, as if the onion sheets are loose.
Deep Web sites use another type of encryption and use this way to divert the signal from one node to another. Regular browsers are not able to access such a site, which it can not even index.
The Tor browser manages to access these sites with very tangled addresses and the .onion extension.
For the most part, Deep Web contains databases from companies and state institutions. There are databases behind sites or internal databases that are very massive and often contain confidential information. Search engine crawlers have banned access here and can not find new information.
Search engines are the main source to discover new sites when we search for information. But search engines have a limit, because they are able to discover only a very small part of what is called the internet. Practically, by searching, we just scratch the surface of the internet.
Most of the internet remains hidden because it is intended. The Internet is like an iceberg that floats and leaves just 10% of its entire volume.
The Internet that ordinary users access (blogs, portals, news sources, video sites, etc.) is called Surface Web or Clear Web. Here everything is visible and sites can be accessed via search engines.
The unseen part of the internet is called Deep Web. Here we find both in the moon and in the stars, but things that should be thoughtful as they are hidden.
Deep Web Origin
But besides databases, there are also websites that are deliberately hidden from view and can only be accessed with the help of special browsers such as Tor. The number of these sites is reduced to 10,000. Most of them are associated with criminal activity, from drugs and weapons to explicit video, forming the area called Dark Web. Some kind of bad Deep Web neighborhood.
Among the most popular sites on Dark Web are Silk Road, Agora, and Evolution.
The general conception is that the Dark Web does not add up just fine things. It is true that criminals take advantage of this hidden network to operate. However, there is also a good part. Here anonymous information may be shared that would jeopardize those who publish them if they were the source. This is the case for WikiLeaks who found this area of the web an opportunity to bring out some information. There is even a program called SecureDrop that is integrated with Tor services and offers anonymity to those who want to publish sensitive information.