The end goal of the final paper „Deep Web“ is to basically learn what Deep Web is and how widespread is it. Using the program called TOR we access the „hidden“ part of the internet known as Deep Web. The paper describes the process of accessing theDeep Web using the program mentioned before. We listed all of its features and advantages over other web browsers. We also investigated the value of BitCoin which is used in online transactions because of its anonymity. The aim of this paper is to show the extent to which Deep Web developed and how widespread and omnipresent it is, without us even knowing that. We showed the development of Dark Webwhich mention his largest online market Silk Road which is responsible for the increase in popularity and the price of BitCoin. Silk Road was also a subject of one of the largest arrests when many users of the Deep Web were arrested and among them was the founder of the Silk Road, Ross Ulbricht also known as Dread Pirate Robert. The mentioned Dark Web is a place where almost all of the content is illegal. Some of the illegal actions that take place on the Dark Web are: espionage, server surveillance, various illegal services, resales of enormus quantities of drugs,sellingsex slavesand even websites linked to pedophilia.