Glossary
D
Database management system
Distributed control system
A process where information is reduced to an OFFICIAL level and an administrative decision is made to authorise its release into the public domain.
The process of removing something from operational service.
The act of decoding encrypted messages.
The part of the internet not indexed by search engines and includes password-protected and paywalled websites, databases and networks. See also dark web.
When a device needs a username and password to log in, a default password is provided to allow the device to be accessed during initial setup or after resetting to factory defaults.
The act of implementing multiple layers of security controls in a system to maintain overall security should a security control fail or a vulnerability be exploited in a localised area.
A device or magnet assembly which generates a coercive magnetic force for the purpose of degaussing magnetic storage devices.
A process for reducing the magnetisation of a magnetic storage device to zero by applying a reverse magnetic force, rendering any previously stored information unreadable.