The National Terrorism Threat Level Advisory System is a scale of five levels to provide advice about the likelihood of an act of terrorism occurring in Australia:

• Certain
• Expected
• Probable
• Possible
• Not expected

The current level is Possible. When the threat level changes, the Australian Government provides advice on what the threat level means, where the threat is coming from, potential targets and how a terrorist act may be carried out. The National Terrorism Threat Level is regularly reviewed in line with the security environment and intelligence. For more information on the system, the current threat level and advice for the public visit: https://www.nationalsecurity.gov.au/national-threat-level/threat-advisory-system