The National Terrorism Threat Advisory System provides advice about the likelihood of an act of terrorism in Australia. This informs what safety measures individuals, businesses and authorities need to take.
The National Terrorism Threat Advisory System also informs the Australian Government's national security preparedness and response planning.
There is a scale of 5 levels. They are:
Certain
A terrorist attack is certain and the government has concerns that a terrorist attack will occur or is underway.
Expected
A terrorist attack is expected and the government has concerns of a specific threat.
Probable
A terrorist attack is probable and the government has concerns of a plausible threat.
Possible
A terrorist attack is possible and the government has concerns a threat may exist.
Not expected
A terrorist attack is not expected and the government has no specific concerns.
Future changes
The Australian Government regularly reviews the security environment and the threat level and publishes advice for the public on the
Current National Terrorism Threat Level.
More details on the National Terrorism Threat Advisory System
Read our
National Terrorism Threat Advisory System fact sheet for more information.
