Glossary

ASD-Approved Cryptographic Algorithm

ASD-Approved Cryptographic Protocol

Australasian Certification Authority

The process of granting or denying requests for access to systems, applications and data. Can also refer to the process of granting or denying requests for access to facilities.

A system permitting access to multiple security domains from a single client device.

The illegal practice of collecting email accounts from data in the public domain or by using software to search for email addresses stored locally on a computer. Account harvesting may be used for spamming. See also spamming.

Material that requires the strictest control over its access and movement. Accountable material includes TOP SECRET data, some types of caveated data and any data designated as accountable material by its originator.

Australian Communications Security Instruction

The principle of proactively implementing a spectrum of security measures to strengthen a network or system to make it more robust against attack. Active defence is separate from offensive cyber operations, passive defence or network hardening. Note that some references to active defence focus on employing limited offensive action and counterattacks – commonly referred to as ‘hacking back’. The term 'active defence' is not synonymous with ‘hacking back’, so these terms should not be used interchangeably.

Software that prevents advertisements from appearing with the content the user is intentionally viewing.