The .gov.au means it’s official
Australian government websites always use a .gov.au domain. Before sharing sensitive information online, make sure you’re on a .gov.au site by inspecting your browser’s address (or 'location') bar.
This site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
Last year the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA) worked with an external provider to build a secure payment portal.