Cyber.mil - Launch CYBER | PerformCare

It’s defined as the study of control systems and communication between people and machines. Weiner used the ancient Greek word cyber, which is related to the idea of governing. In Weiner’s book, Cybernetics, he describes a computer system that ran on feedback essentially a self-governing system. This idea was groundbreaking for the 1940s.

Cyber is a prefix that denotes a relationship with information technology (IT). Anything relating to computing, such as the internet, falls under the cyber category. It’s worth noting cyber carries a connotation of a relationship with modern computing and technology.

Cyber is typically used as the prefix of a compound word. Like many compound nouns, those featuring cyber can be written as one word (cyberspace), as two words (cyber space) or as a hyphenated word (cyber-space). For consistency, all examples will be one word.