Resources
Glossary of Cyber Security Terms
A plain English guide to the language of cyber security. Published by Australia’s professional institute for cyber security, this glossary provides clear, authoritative definitions for practitioners, leaders, and the public.
A Shared Language for Cyber Security
Effective cyber security relies on clear communication. However, the field is filled with specialised terms, acronyms, and jargon that can be a barrier to understanding for non-specialists. This confusion can lead to misinformed decisions, poor policy, and a weaker security posture for organisations and the nation.
As a public interest initiative, the Australian Institute of Cyber Security (AICS) publishes and maintains this glossary to promote a common, accessible language. By providing clear definitions for key terms, we aim to help everyone involved in cyber security—from the boardroom to the server room—to communicate with precision and confidence.
Who the Glossary is For
This resource is designed for a wide audience, providing a trusted reference for anyone seeking to understand or communicate cyber security concepts.
Cyber Security Professionals
A tool for ensuring clear communication with clients, executives, and non-technical colleagues. It helps practitioners, including chartered members holding GAICS, MAICS, or FAICS designations, to standardise terminology in their reports and advice.
Students and Educators
A foundational text for those entering the profession. The glossary provides a reliable starting point for learning the core vocabulary used in accredited cyber security courses and professional practice across Australia.
Business Leaders and Policy Makers
Demystifies the technical language often used in security briefings and policy documents. It enables leaders to ask better questions, evaluate risks more effectively, and make informed strategic decisions about cyber resilience.
Journalists and the Public
An accessible reference for reporting on and understanding cyber incidents. For anyone affected by a data breach or seeking to learn more about online safety, the glossary offers explanations you can trust.
A Living, Current Resource
The cyber security landscape is constantly changing, with new threats, technologies, and terminology emerging all the time. A static list of terms would quickly become outdated and unreliable. Recognising this, AICS is committed to maintaining the glossary as a living document.
The definitions are regularly reviewed, updated, and expanded by a dedicated committee of AICS members and subject matter experts. This process ensures the glossary remains a current, authoritative, and practical resource that reflects contemporary Australian and international practice. It is a core part of the institute’s mission to uphold professional standards and support the security of our community.
Explore the A-Z Glossary
Browse our comprehensive, plain English definitions for the key terms and concepts in cyber security, published free for the Australian community.