[1] Based on top secret documents, the Australian Signals Directorate is believed to be part of the development of “Regin”, a highly sophisticated malware known to be “top-tier espionage tool”.
[2] The agency is also linked with “DSD”, previously known as Defence Signals Directorate.
[3] However, the Australian government continuous to keep mum about these top secret documents.
Source: http://www.smh.com.au/national/australias-computer-spies-get-down-and-dirty-20150128-1301fd.html