Australia's financial year runs from July 1 to June 30; for example, financial year 2017 starts on July 1, 2016 and ends on June 30, 2017.
The source suggests that the comparatively higher number of reports from Commonwealth, State and Territory Governments is due to their close working relationship with the ACSC and their willingness to report incidents.
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Cyber security incidents reported to ACSC in Australia FY 2020, by sector
In 2020, the Australian Cyber Security Centre received a total of *** cyber security threat reports from Commonwealth Government agencies. The second highest number of threats were reported by state and territory government agencies.
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Department of Home Affairs (Australia). (September 3, 2020). Number of cyber security threats reported to the Australian Cyber Security Centre in Australia in financial year 2020, by affected sector [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 27, 2026, from /statistics/1182325/australia-cyber-security-incidents-by-sector/
Department of Home Affairs (Australia). "Number of cyber security threats reported to the Australian Cyber Security Centre in Australia in financial year 2020, by affected sector." Chart. September 3, 2020. ÌÇÐÄÆƽâ°æ. Accessed July 27, 2026. /statistics/1182325/australia-cyber-security-incidents-by-sector/
Department of Home Affairs (Australia). (2020). Number of cyber security threats reported to the Australian Cyber Security Centre in Australia in financial year 2020, by affected sector. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 27, 2026. /statistics/1182325/australia-cyber-security-incidents-by-sector/
Department of Home Affairs (Australia). "Number of Cyber Security Threats Reported to The Australian Cyber Security Centre in Australia in Financial Year 2020, by Affected Sector." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 3 Sep 2020, /statistics/1182325/australia-cyber-security-incidents-by-sector/
Department of Home Affairs (Australia), Number of cyber security threats reported to the Australian Cyber Security Centre in Australia in financial year 2020, by affected sector ÌÇÐÄÆƽâ°æ, /statistics/1182325/australia-cyber-security-incidents-by-sector/ (last visited July 27, 2026)
Number of cyber security threats reported to the Australian Cyber Security Centre in Australia in financial year 2020, by affected sector [Graph], Department of Home Affairs (Australia), September 3, 2020. [Online]. Available: /statistics/1182325/australia-cyber-security-incidents-by-sector/
