Glossary

A B C D E F G H I L M N O P Q R S T U V W Z

U


Unauthorised access (to facilities or assets)

Access to official facilities or assets that is not sanctioned by government policy or agency direction or an entitlement under legislation.

Unauthorised access (to information)

Access to official information that is not based on a legitimate need to know, sanctioned by government policy or agency direction or an entitlement under legislation.

Unauthorised disclosure (of official information)

The communication or publication of official information where it is not based on a legitimate need to know, sanctioned by government policy or agency direction or an entitlement under legislation.

Unclassified (information)

Official information that is not expected to cause harm and does not require a security classification. It may be unlabelled or it may be marked ‘UNCLASSIFIED’. This type of information represents the bulk of official information.

Uninterruptible Power Supply (UPS)

An electrical apparatus that provides emergency power when the input power source or mains power fails.

Unplanned event

An event that occurs at short notice, is routine or otherwise does not allow, or require, for detailed planning, including security planning. Also see Event.