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The Australian Cyber Security Centre (ACSC) leads the Australian Government’s efforts to improve cyber security. Our role is to help make Australia the safest 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, small to medium business, big business 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 200 industry, 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. For more information about the ACSC, visit our corporate page.

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

ASD Leadership

Minister for Defence
Senator the Hon Linda Reynolds CSC

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

Acting Head ACSC
Karl Hanmore


Karl Hanmore - Head of ACSC

Karl Hanmore was appointed Acting Head of the Australian Signals Directorat's Australian Cyber Security Centre (ACSC) in December 2019.

Prior to his appointment, Karl held a number of senior executive roles within the Centre and Directorate, including First Assistant Director-General Engagement, Operations and Intelligence (EOI). Karl's EOI Division portfolio included cyber incident response, threat intelligence gathering and analysis, public messaging, cyber security awareness and behaviour change, and international engagement to help make Australia the safest place to connect online.

Karl brings wide experience in a range of high-level roles in the government and non-government sectors, including CERT Australia (part of the ACSC since its establishment in July 2018) and Microsoft.

Karl is married with two children. He considers himself 'a bit of a geek', with interests in electronics and gaming, and enjoys spending time with his family in his spare time.


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