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Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) leads the Australian Government’s efforts to improve cyber security. Our role is to help make Australia the most secure place to connect online.

We monitor cyber threats across the globe 24 hours a day, seven days a week, so we can alert Australians early on what to do.

We provide advice and information about how to protect yourself and your business online. When there is a cyber security incident, we provide clear and timely advice to individuals, businesses and critical infrastructure operators.

We work with our business, government and academic partners and experts in Australia and overseas to investigate and develop solutions to cyber security threats.

We have a national footprint of Joint Cyber Security Centres where we collaborate with nearly 2000 business, government and academic partners on current cyber security issues. We also work with law enforcement authorities to fight cybercrime.

We are part of the Australian Signals Directorate (ASD), which has a long history of cyber security excellence. 

Cyber security is everyone’s responsibility. Let’s work together to make Australia the most secure place to connect online.

ASD leadership

Minister for Defence

The Minister for Defence is responsible for the Australian Signals Directorate (ASD).

Director-General ASD

The Director-General leads ASD and is responsible to the Minister for Defence.

ACSC leadership

The Head leads ASD's ACSC and is responsible to the Director-General ASD.

Abigail Bradshaw CSC


Abigail Bradshaw CSC is the Head of the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC).

Abigail worked in the Department of Prime Minister and Cabinet, most recently as the Deputy Coordinator of the National Bushfire Recovery Agency and prior to that as the head of the National Security Division. She has held senior roles in the Department of Home Affairs offshore covering Europe and sub-Saharan Africa and as the department’s inaugural Chief Risk Officer. She was the Deputy Commander of Maritime Border Command during the height of the people-smuggling trade.

Abigail began her career in the Royal Australian Navy and was awarded the Conspicuous Service Cross in 2005. She holds a Bachelor of Laws and a Bachelor of Asian Studies.


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