Glossary

ARCHIVED 2023-10-01, DATE APPROXIMATE · VERSION 20231001_rev01 · COMPARED WITH 20230919_rev01

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 A database is an organized collection of data, stored and accessed electronically, usually via a computer system. A database can be small or large, simple or complex depending on the situation. It can contain any type of information, and is a critical component of many computer systems.
 [Deep Web](https://brave.com/glossary/deep-web/)
 The Deep Web is the portion of the Internet not indexed by traditional search engines. It often requires a login (such as a username and password) or special software to access. The part of the Web that's accessible using search engines-sometimes called the Surface Web-is actually just a small piece of the overall World Wide Web. The much larger, less visible, piece is called the Deep Web. Some estimates suggest that 90-95% of the overall World Wide Web is actually the Deep Web.
+[Digital footprint](https://brave.com/glossary/digital-footprint/)
+A digital footprint is the trail of data created by a person's online activity. These activities include things like searching the Web, visiting social media, and online shopping, along with less obvious data sources like physical location or website visits. Businesses collect, trade, and analyze digital footprint data, and use this data to create profiles of people (often, though not always, for the purposes of targeted advertising).
 [DNS](https://brave.com/glossary/dns/)
 The Domain Name System (DNS) is an Internet protocol that enables a browser and operating system to look up the IP addresses that correspond to domain names. IP addresses and domain names are each a type of identifier for devices on the Internet. IP addresses are numerical (like 203.0.113.43), while domain names are human-readable (like "brave.com").
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