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European Definitions

National Definitions

United States
An unplanned event that causes an information system to be inoperable for a length of time .[1]

E.g., minor or extended power outage, extended unavailable network, or equipment or facility damage or destruction.

Standard Definition

ISO/PAS 22399:2007

Incident, whether anticipated (e.g. hurricane) or unanticipated (e.g. a blackout or earthquake) which disrupts the normal course of operations at an organization location. [2]

SS 540:2008

Interruption of normal business operations or processes which can range from short term to longer term unavailability. [3]

See also