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Who is the Active Cyber Defence Alliance Inc?


Aims and Intentions.

The Active Cyber Defence Alliance Inc (ACDA) is a think tank whose aim is to foster awareness, adoption and capability in Active Cyber Defence practices across Australia with the goal of lifting Australia's cyber resilience.

Our intention is to draw together professionals from both supply and demand side along with academic, legal and regulatory stakeholders who will jointly act to support active cyber defence initiatives and to influence policy and practices for the benefit of our community rather than the explicit interests of their organisation.

What we mean by "Active Cyber Defence".

Active Cyber Defence employs cyber intelligence, deception, active threat hunting and lawful countermeasures to expose, elicit and disrupt malicious actors before they impact data and operational capability. An active approach complements current static defences that incorporate security practices such as network hygiene, firewalls, malware filters, identity & access controls, good user behaviour etc. Active Defence can also provide personalised pre-emptive intelligence to inform effective static defences. Active Cyber Defence excludes Offensive cyber actions which are the sole domain of authorised government agencies, although it can include mechanisms to incorporate and coordinate responses of such agencies.


The Active Cyber Defence Alliance Inc is a not for profit association registered in NSW, Australia.  Membership and participation in the Alliance is open to individuals and organisations of good standing who wish to prosecute the aims and intentions of the Alliance. 

Apply at [email protected]


The following diagram provides the context of Active Cyber Defence as compared to traditional Passive Defence and Offence. The ACDA seeks to improve the awareness of existing legal controls and counter measures available to organisations in the Grey Zone.

Grey Zone diagram.

Original released by George Washington University under Creative Commons 4.0 here - adapted for the ACDA. 

Active Cyber Defence grey area diagram