The Four Big Moves That Will Define Australia’s Cyber Future
“Assume compromise.” That’s the sobering mindset the Australian Cyber Security Centre (ACSC) is urging every organisation to adopt in 2025.
As cyber threats surge in scale and sophistication, the government has made it clear: the time for reactive security is over. This year’s Cyber Awareness Month has focused on four critical actions, dubbed the “big moves”, that every business must take to future-proof their digital infrastructure.
At Diamond IT, we’ve spent the past month unpacking each of these moves in depth. Now, we’re bringing it all together in one place, so you can see the full picture, understand what’s at stake, and take action.
Why Is the Government Pushing These Four Moves?
The Annual Cyber Threat Report 2024–25 paints a stark picture: cybercrime costs for Australian enterprises have surged 219%, with ransomware, credential theft, and supply chain attacks leading the charge. State-sponsored actors are increasingly targeting critical infrastructure, while everyday businesses are being caught in the crossfire.
To combat this, the ACSC has spotlighted four strategic priorities:
- Best-practice event logging
- Legacy technology replacement
- Third-party risk management
- Post-quantum cryptography readiness
These aren’t just technical upgrades, they’re cultural shifts. They require leadership, investment, and a proactive approach to cyber resilience.
The Four Big Moves: Explained and Linked
- Event Logging: Your First Line of Defence
Without visibility, you can’t defend. Event logging helps organisations detect anomalies, respond to threats faster, and meet compliance standards.
📘 Read more: What Is Event Logging and Why It Matters
“Malicious actors thrive when organisations lack a logging baseline,” warns the ACSC. Logging isn’t optional, it’s foundational.
- Legacy Technology: The Hidden Risk
Outdated systems are a cybercriminal’s playground. They lack vendor support, miss critical patches, and often can’t integrate with modern security tools.
📘 Read more: Legacy Technology Risks: Why It’s Time to Upgrade
The ACSC notes that replacing legacy IT is less costly than recovering from a breach. Prevention is cheaper than cure.
- Third-Party Risk: The Supply Chain Blind Spot
From software vendors to cloud providers, every external partner introduces risk. Threat actors increasingly exploit these relationships to gain access.
📘 Read more: Managing Supply Chain Risks in Cyber Security
The ACSC urges organisations to evaluate risk pre- and post-purchase and build resilience across the supply chain.
- Quantum Readiness: Preparing for Tomorrow’s Threats
Quantum computing will eventually break today’s encryption. The ACSC is calling for early adoption of post-quantum cryptography (PQC) to stay ahead.
📘 Read more: Quantum Computing Readiness: What You Need to Know
“A cryptographically relevant quantum computer (CRQC) could compromise communications,” says the ACSC. PQC is the future of secure data.
Adoption of These Measures?
While large enterprises and critical infrastructure providers are beginning to implement these strategies, many small and medium businesses are lagging behind. The ACSC’s recent survey shows that SMBs face barriers like lack of awareness, budget constraints, and competing priorities.
However, the government is pushing hard. Cyber Awareness Month 2025 has been a national call to action, with weekly themes dedicated to each of the four big moves. Resources, toolkits, and training are being rolled out to help businesses catch up.
Why Start Now!
The consequences are real, and growing:
- Financial loss: The average cost of a cyber incident for large businesses is now over $202,000, with medium and small businesses losing an average of $97,000 and $56,600 respectively.
- Operational disruption: Ransomware can halt operations for days or weeks.
- Reputational damage: Customers and partners lose trust quickly.
- Legal exposure: New regulations, like mandatory ransomware reporting, are increasing accountability.
In short, inaction is risk…
Cyber Awareness Is a Culture, Not a Campaign
Cyber Awareness Month 2025 may be wrapping up, but the journey is just beginning. The ACSC’s message is clear: cyber resilience is everyone’s responsibility. Whether you’re a CEO, IT manager, or frontline employee, your actions matter toward building a cyber-safe culture.
If You Don’t Know What Steps to Take Next, Diamond IT Can Help
At Diamond IT, we don’t just talk about cyber resilience, we build it. We help organisations turn awareness into action. We’ll help you build resilience step by step.
- Assess your cyber security posture.
- Upskill your employees in cyber awareness.
- Modernise legacy systems.
- Strengthen third-party security.
- Discuss future technology.
👉 Let’s talk about embedding cyber awareness into your culture and building cyber resilience in your organisation. Reach us via phone on 1300 307 907, email us at enquiries@diamondit.com.au or fill out the form below.
