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Glossary of terms and definitions for IT (Information Technology), the Internet and cyber security.
This glossary provides more than 480 clear and concise definitions of commonly used terms in the fields of information technology, the internet, and cyber security. It is designed to support users of all levels in understanding key concepts, technical jargon, and acronyms frequently encountered across digital platforms and security-related discussions. Whether you are a business owner, student, professional, or simply interested in the digital landscape, this resource aims to enhance your knowledge and confidence in navigating the ever-evolving world of technology.
A unique address used to identify a website on the internet, typically ending in .com, .org, .au, etc.
Example: They registered a new domain for their business website.
The system that translates human-readable domain names into IP addresses, allowing users to access websites without remembering numeric addresses.
Example: When the DNS servers failed, users could not reach any websites by domain name.
See also: Domain Name
A Canonical Name (CNAME) record is a type of DNS record that maps an alias domain name to the true or canonical domain name.
Example: The CNAME record maps www.example.com to example.com so both addresses point to the same website.
See also: DNS (Domain Name System)
An attack that manipulates DNS (Domain Name System) records to redirect users to fraudulent websites.
Example: You type in your bank's website address, but DNS spoofing sends you to a fake site designed to steal your login details.
A server that handles queries regarding the location of a domain name's services.
Example: The domain's name server was updated during migration.