Mandatory Ransomware Reporting Australia: What the New Law Means for Your Business
On 30 May 2025, the Cyber Security (Ransomware Payment Reporting) Rules 2025 commenced, making Australia one of the first countries in the world to legally require businesses to report ransomware payments to the government within 72 hours. If your business has an annual turnover of $3 million or more, or you are responsible for any critical infrastructure asset, the mandatory ransomware reporting Australia regime now applies to you. Get it wrong and you face fines, regulatory scrutiny, and potentially criminal exposure. Get it right and you unlock “limited use” protections that can shield your business from downstream enforcement. Most Australian SMBs have no idea this law exists. Here is what you need to know. What the Mandatory Ransomware Reporting Australia Law Actually Requires Under Part 3 of the Cyber Security Act 2024 (Cth), reporting business entities must submit a formal report to the Australian Signals Directorate (or another designated Commonwealth body) within 72 hours of: A “reporting business entity” includes: The report must include specific information about the incident, the extortion demand, the payment, and the parties involved. Why the Government Introduced This Obligation The Australian government’s rationale is straightforward. Before the law, the vast majority of ransomware incidents in Australia went unreported, meaning: The law creates a national dataset that the ASD, the National Cyber Security Coordinator, and the Cyber Incident Review Board can use to protect other Australian businesses. The “Limited Use” Safeguard You Need to Understand The law includes an important protection known as “limited use.” Information reported under the mandatory ransomware reporting Australia regime generally cannot be used to investigate or enforce against the reporting business, except for: This means cooperating with the law actually protects your business in most regulatory contexts. Failing to report, however, exposes you to enforcement with no protection. What This Means Practically for Your Incident Response Plan Every Australian SMB with turnover above $3 million needs to update its incident response plan to include: Recommended Link: Business Continuity and Incident Response Planning Should You Actually Pay the Ransom? The mandatory ransomware reporting Australia law does not prohibit paying ransoms, but paying is almost always the wrong decision: The Australian government’s position, and the position of the ASD, is that prevention, tested backups, and structured response are always the better option. Recommended Link: Business Cyber Security Policies and Legal Compliance Is Your Business Ready to Report Inside 72 Hours?The mandatory ransomware reporting Australia regime is now live. Non-compliance carries real penalties and real exposure. Frequently Asked Questions Q: What happens if I do not report a ransomware payment?A: You face civil penalties and potentially criminal exposure, depending on circumstances. You also lose the “limited use” protections that would otherwise apply. Q: Does the mandatory ransomware reporting Australia law apply to small businesses under $3 million?A: Not currently for the turnover threshold, but if you are responsible for a critical infrastructure asset, you must still comply regardless of size. Voluntary reporting is also encouraged for all businesses. Q: Does reporting the payment protect me from OAIC privacy enforcement?A: No. Privacy Act obligations around notifiable data breaches are separate. You may need to report to both the ASD (for the payment) and the OAIC (for the data breach). The mandatory ransomware reporting Australia law marks a significant shift in how ransomware is treated in this country. It is no longer a quiet, negotiated problem handled between victims and criminals. It is a national intelligence matter with formal obligations. Every Australian SMB above $3 million in turnover needs to know the rules, update its plans, and decide now, not during the crisis, how it will respond when the ransom demand arrives. (We are not looking to replace your current provider, just offering an alternative perspective) Written by Neil Frick Sources & References
Read MoreThird-Party Data Breach: The LexisNexis Lesson Every Australian Business Ignores
When LexisNexis confirmed a major cloud breach in March 2026 exposing legal and government client data, it exposed something every Australian business should already know: your cyber security is only as strong as the weakest vendor connected to your systems. A third-party data breach does not need to touch your infrastructure at all. It just needs to touch someone who touches you. From the OracleCMS breach that hit Victorian councils, to the Pareto Phone incident that leaked charity donor data, to MOVEit, Blackbaud, and now LexisNexis, the pattern is identical. If you are not actively managing your vendors, you are not managing your cyber risk. Why Third-Party Data Breach Incidents Dominate the Headlines The Office of the Australian Information Commissioner has repeatedly flagged third-party and supply-chain incidents as one of the fastest-growing breach categories. In the first half of 2025 alone, more than 30% of notifiable breaches in Australia involved a vendor, service provider, or contractor. Recent high-profile Australian examples include: What Exactly Is a Third-Party Data Breach? A third-party data breach occurs when an organisation suffers loss, exposure, or compromise of data through a vendor, supplier, contractor, SaaS provider, or any other external party with access to the organisation’s systems or information. This includes: The Five Vendor Questions Every Australian SMB Must Ask Before you sign any contract that involves a vendor touching your data, your staff, or your systems, you need clear answers to these five questions: Recommended Link: SOC 2 Compliance Services for Australian Businesses Contract Clauses That Actually Protect You Most Australian SMB contracts with vendors contain generic boilerplate security language that does not survive a real breach. Stronger clauses include: Recommended Link: Business Cyber Security Policies and Contract Review Do You Know Which Vendor Will Cause Your Next Breach?Third-party data breach incidents now account for a growing share of Australian notifications. You cannot delegate your risk. Frequently Asked Questions Q: Am I legally responsible if a vendor causes a third-party data breach?A: In most cases, yes. Under the Privacy Act, the organisation that collected the personal information usually remains accountable, even if the breach occurred at a processor or vendor. Q: How often should I review my vendors?A: At minimum annually. For vendors handling sensitive data or with privileged access, a six-month review cycle is strongly recommended. Q: What is the first vendor I should review?A: Any vendor with access to your email environment, your customer database, your payroll system, or your financial records. These are your crown jewels. The LexisNexis breach, the OracleCMS incident, and every other third-party data breach on the Australian record share one common feature: the victim organisations trusted their vendors without verification. Trust is not a control. Verification is. (We are not looking to replace your current provider, just offering an alternative perspective) Written by Neil Frick
Read MoreDefence Supply Chain Cyber Attack: Why Every Australian SME Contractor Is a Target
When hackers sat undetected inside IKAD Engineering for five months and walked out with data relating to Australia’s Hunter and Collins class submarine programs, they did not need to break into the Department of Defence. They only needed to compromise one small engineering subcontractor. The defence supply chain cyber attack trend has escalated sharply through 2025 and 2026, and the targets are almost never the prime contractors. They are the SMEs nobody has heard of. If your business sits anywhere in the Australian defence, aerospace, or critical infrastructure supply chain, this is the threat landscape you need to understand today. What the IKAD Defence Supply Chain Cyber Attack Revealed IKAD Engineering is an Australian supplier providing components and services to defence, marine, mining, and oil and gas. In November 2025, the J Group ransomware gang claimed to have exfiltrated up to 800 gigabytes of data through a vulnerable legacy VPN, maintaining a hidden presence inside the network for approximately five months. The stolen data allegedly included: The attackers used a technique called “living off the land,” relying on legitimate administrative tools already present on the network to avoid detection. Why the Defence Supply Chain Cyber Attack Vector Is So Effective Prime contractors like BAE Systems, Lockheed Martin, and Thales invest tens of millions in cyber defence every year. Smaller subcontractors usually do not. The attackers know this. The defence supply chain cyber attack pattern in 2025 and 2026 shows a consistent approach: The Defence Industry Security Program (DISP) Is No Longer Optional Any business wanting to win or retain defence contracts in Australia increasingly needs to demonstrate membership in the Defence Industry Security Program. DISP requires: Meeting DISP is not just a compliance exercise. It is the baseline for surviving a defence supply chain cyber attack. Recommended Link: Penetration Testing for Defence and Critical Supply Chains Five Controls That Would Have Stopped the IKAD Attack Recommended Link: SIEM and 24/7 Security Monitoring Is Your Business the Weak Link in a National Security Supply Chain?The defence supply chain cyber attack trend will intensify through 2026. Prime contractors are now demanding proof. Frequently Asked Questions Q: I am a small engineering or services firm. Am I really a target?A: Yes. Attackers increasingly target Tier 2, Tier 3, and Tier 4 suppliers precisely because their security posture is weaker than the prime contractors they serve. Q: What is the difference between DISP and the Essential Eight?A: DISP is the Defence-specific security framework. The Essential Eight is the broader ACSC baseline that feeds into DISP requirements. Most DISP-aligned businesses implement Essential Eight as the foundation. Q: How long does it take to prepare for DISP membership?A: For most Australian SMEs with a low starting maturity, a realistic DISP readiness program takes three to nine months depending on scope and existing controls. The defence supply chain cyber attack against IKAD Engineering is a preview of what is coming for every Australian SME that handles sensitive commercial or government project data. Attackers are patient, they are coordinated, and they already know where the weak links are. The question is whether yours will hold. (We are not looking to replace your current provider, just offering an alternative perspective) Written by Neil Frick Sources & References
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