Defining Critical Infrastructure

Critical infrastructure is those physical facilities, supply chains, information technologies and communication networks which if destroyed, degraded or rendered unavailable for an extended period would significantly impact on the social or economic well-being of the nation or affect the nation's ability to conduct national defence and ensure national security. Critical infrastructure involves the following sectors:

• Energy
• Utilities
• Transport
• Communications
• Health
• Food Supply
• Finance
• Government Services
• National Icons
• Essential Manufacturing