Incident

Crisis

An unusual, unstable and complex situation that threatens an organisation's strategic objectives, reputation or viability. What defines it is uncertainty, not severity.

Disruption

An event, anticipated or not, that causes an unplanned negative deviation from the expected delivery of products and services.

Major ICT-related incident

An ICT incident with a high adverse impact on networks and systems supporting critical or important functions, assessed against harmonised criteria: clients affected, duration, geographical spread, data losses, criticality and economic impact.