The Dangers of Dark Web Sites Whether you're looking for a source of information about the latest science or the latest news, the dark web offers a variety of useful sites. However, these can be dangerous, so you need to be careful. The dark web is a network of sites and services that is completely underground and is not searchable. Users must use a special browser to access them. There are many different types of websites that you can access on the dark web, including black markets for drugs, weapons, and counterfeit goods.