The terms “deep web” and “dark web” are sometimes used interchangeably, but they are not the same. Deep web refers to anything on the internet that is not indexed by and, therefore, accessible via a search engine like Google. Deep web content includes anything behind a paywall or requires sign-in credentials. It also includes any content that its owners have blocked web crawlers from indexing.
Medical records, fee-based content, membership websites, and confidential corporate web pages are just a few examples of what makes up the deep web. Estimates place the size of the deep web at between 96% and 99% of the internet. Only a tiny portion of the internet is accessible through a standard web browser — generally known as the “clear web”.
The Into the Web of Profit report identified some categories of tools or services that could present a risk in the form of a network breach or data compromise:
- Infection or attacks, including malware, distributed denial of service (DDoS) and botnets
- Access, including remote access Trojans (RATs), keyloggers and exploits
- Espionage, including services, customization and targeting
- Support services such as tutorials
- Credentials
- Phishing
- Refunds
- Customer data
- Operational data
Dark web browser
Accessing the dark web requires the use of an anonymizing browser called Tor.
Dark web search engine
Dark web search engines exist, but even the best are challenged to keep up with the constantly shifting landscape. The experience is reminiscent of searching the web in the late 1990s. Even one of the best search engines, called Grams
Dark web sites
One is the naming structure. Instead of ending in .com or .co, dark web sites end in .onion. That’s “a special-use top level domain suffix designating an anonymous hidden service reachable via the Tor network.
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