The dark web is a portion of the internet that isn't indexed by standard search engines and requires specialized software like Tor (The Onion Router) to access. Unlike the regular web, it provides a high degree of anonymity for both users and site operators.
The internet can be understood in three layers. The surface web (sites findable through Google) represents only about 4% of the total internet. The deep web (login-required pages, databases, intranets) accounts for roughly 90%, and the dark web makes up the remaining few percent. The deep web and dark web are often confused, but most deep web content is perfectly legal (email inboxes, bank account pages, etc.).
Dark web anonymity is achieved through Tor's "onion routing." Data passes through multiple relay nodes, with each node peeling away one layer of encryption - like peeling an onion - to obscure the communication path.
The connection between short URLs and the dark web centers on phishing attacks. Attackers use personal information obtained from dark web forums to craft phishing links disguised with short URLs sent via email or SMS. Since short URLs hide the destination, recipients struggle to determine whether the link leads to a legitimate site. Always use preview features (such as appending "+" to the URL) to check redirect destinations before clicking suspicious short URLs.
The dark web itself is not illegal. Journalists use it to protect sources, and citizens under political oppression use it to circumvent censorship. However, its anonymity also makes it a haven for illegal activities including personal data trading and malware distribution. Related books are available on Amazon.