Australian Cyber Security Centre

The Australian Cyber Security Centre (ACSC) is based within the Australian Signals Directorate (ASD). We provide advice and information about how to protect you, your family and your business online. We moderate our page to remove inappropriate posts. For more information about how we engage on social media, visit This page is monitored during Australian business hours Monday to Friday between 9.00am and 5.00pm AEST. To report a crime or for general advice about local security and safety issues in your community, call your local police on or Crime Stoppers on 1800 For police, fire or ambulance response to a life threatening emergency or if a crime is in progress, call triple zero If you wish to report suspicious activity, call the National Security Hotline on 1800 123 400.