The Internet is something which has become the essential part of our life. In 2015 international telecommunication union estimated 3.2 billion of people uses the internet worldwide. Which is almost the 50% of total world population. This fact itself shows how popular the internet is. It has been using for endless purposes. Google almost has the answer for everything if not for all. But the interesting fact is all google search results are just 4-5% of the total internet. The rest 95-96% of the web is unknown to google. And that can never be shown in any google search. They are called Deep web and Dark web. The Web is categories in three parts Surface web, Deep web, and Dark web. The web is like an HB pencil in a glass of water. The small part of the pencil which is outside the water glass is called the surface web. And the underwater part of the pencil is called Deep web and Dark web. All the google search results come under surface web. And this is open to all kind of web. Anyone with proper access to the internet can use this. Now let’s talk about the Deep web. Data and files which can be accessed only by some authorized persons are called the Deep web. These files never appear in any google search. The examples is google drive files, Dropbox files and other cloud and personal storage files. They are kept secret from the world. Only some authorized people have access to these files. They can be some secret project or mission files of any government or an organization. They are kept on the internet just because for accessibility purpose. Another hand Dark web is a black spot on the internet. All criminal activities that happen through the internet are called Dark web. Some folks do weapons smuggling, drugs hosting and other illegal things using the internet, which is called as the Dark web. This is the evil side of the web. And invisible to normal web browsers also google cannot reach there. By using some technique like TOR (The onion router) that part of the web is accessed. Those websites have contents like pirated music and movies, Debit and Credit card details, child pornography and stuff like that. To be at safe side never try to access the dark web. It is highly illegal in any country. And if you try to access it you will put yourself in deep trouble.