History

ASD began as the Defence Signals Bureau in Melbourne on 1 April 1947, tasked with intercepting foreign communications and protecting the communications security of Australia’s military and government departments.

However, ASD’s story stretches back even further to the Second World War. Since then, ASD has met any challenge: global conflicts, technological revolutions, and pandemics. ASD continues to adapt and innovate and is committed to serving the nation and protecting its interests in an ever-changing world.

Explore the resources below to learn more about ASD’s history

Interested in a career with ASD?

Take our Career Quiz to see where you fit.

Acknowledgement of Country icon

Acknowledgement of Country

We acknowledge the Traditional Owners and Custodians of Country throughout Australia and their continuing connections to land, sea and communities. We pay our respects to them, their cultures and their Elders; past, present and emerging. We also recognise Australia's First Peoples' enduring contribution to Australia's national security.

Authorised by the Australian Government, Canberra