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An unexpected occurrence, natural or manmade, that requires a response to protect life or property. Incidents can, for example, include major disasters, emergencies, terrorist attacks, terrorist threats, civil unrest, wildland and urban fires, floods, hazardous materials spills, nuclear accidents, aircraft accidents, earthquakes, hurricanes/tropical storms, tornadoes, tsunamis, war-related disasters, public health and medical emergencies, and other occurrences requiring an emergency response. In contrast to an “event” as defined in the National Incident Management System, an “incident” is an unplanned occurrence.

An occurrence that:

  • Actually or imminently jeopardizes, without lawful authority, the integrity, confidentiality, or availability of information or an information system; or
  • Constitutes a violation or imminent threat of violation of law, security policies, security procedures, or acceptable use policies.


This Order and its Appendices use the term “incident” as the broader term for a situation involving information or information systems. Not all incidents are breaches.

No items have been linked to this term.
  • Environment
  • Safety
  • Security
  • Worker Protection

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