Practical IT Support and Cyber Security for Australian Businesses.
Clear, plain-English guidance to help organisations understand cyber risk, meet evolving expectations, and manage IT support without unnecessary complexity or cost.
Reduce cyber risk and simplify IT and compliance - book a consultation.
Secure operations. Stronger compliance. Real-world cyber defence.
Helping your organisation reduce risk, meet security requirements, and stay operational in an evolving threat landscape.
C5 Defence Group provides managed IT and cyber security services for small businesses through to large organisations. We also work with government agencies to help strengthen Australia’s national security.
We make working with us simple: Discover. Prioritise. Deliver & Support.
First, we learn how your IT systems work and what security rules you need to follow. Then we find the most important risks to fix. Finally, we put the right IT and cyber security controls in place and stay involved to support you over time.
Let us safeguard your operations, so you can focus on driving your success.
Discover
Understand your needs
Prioritise
Identify what matters most
Deliver & Support
Implement controls and stay engaged
Innovative Technology
Solutions for Business
Is your business confident its IT and cyber security can keep pace with today’s threat landscape and compliance expectations?
C5 Defence Group provides defence-aligned managed IT and cyber security services for small to medium businesses and large organisations. We deliver secure IT operations, cloud and network support, cyber risk management, security monitoring, incident response and compliance support - helping organisations improve resilience, reduce downtime, and meet security requirements with dependable managed services and specialist cyber expertise.
Whether you’re a growing SME or a larger organisation, choose the support model that fits your needs.
Enterprise IT, Cyber Security & Compliance
Is your organisation confident it can maintain security, compliance, and operational continuity across complex environments - even as threats evolve?
C5 Defence group delivers enterprise-grade IT management, cyber security, and compliance services designed for organisations that require high assurance, operational resilience, and strong governance. We partner with large enterprises and government-aligned teams to strengthen security posture, reduce risk, and maintain continuity across complex environments.
Our services combine proactive monitoring, expert support, and proven security frameworks to ensure your systems remain secure, compliant, and mission-ready.
Secure, compliant, and supported - technology that gives you confidence.
IT Management
We take a proactive approach by considering the full lifecycle of every asset, providing 24/7 monitoring, and replacing or updating equipment before it fails.
Cyber Security
Our 24x7 human-led cyber security combines continuous monitoring, advanced threat detection, and rapid response to minimise risk and disruption to your organisation.
Compliance
We simplify policies without sacrificing compliance. Our clear, straightforward guidance is easy to follow, ensuring staff are trained in essential data protection and cybersecurity practices.
C5 Defence Group is a trusted partner to clients across Australia, delivering compliant, secure, and continuity-focused solutions through close collaboration.
Partnerships
What clients are saying
"C5 Defence has been a great partner to work with. They listened to what we needed, made everything easy to understand, and helped us feel much more confident in our security and systems. Professional, fast and reliable - highly recommend."
— Bennings Blueberries“We had an internet issue for a week and nobody could fix it - not even the provider. After a 20-minute chat with C5 IT, they explained what was actually happening and had us back online the same day. They manage our tech now and keep us running.”
— Coffs Coast Fabrication & Engineering“We had ongoing POS/EFTPOS and Wi-Fi issues and couldn’t get anyone to properly own it. C5 IT fixed it, made it reliable, and explained everything clearly. It’s been much smoother since.”
— Tattersalls Hotel, Inverell“We had an IT outage that disrupted the clinic and it was hard to get help quickly. When we did get help, it felt complicated and confusing. C5 Defence team sorted it out, tightened our security, and improved backups so we’re not stuck in the same situation again. They’re responsive and explain things clearly.”
— Clear minds Psychology
Get your FREE human risk report
Get a simple cyber risk snapshot in minutes.
1. We'll shine a light on your human risk
We'll scan your domains for dangerous lookalikes, search the dark web for stolen user credentials and simulate a targeted employee phishing attack.
2. You'll get a free one-page report
We'll compile the results into a one-page risk summary, outlining your organisation's Human Risk Score and how quickly you could be breached.
3. Get actionable tips to reduce the risk
Knowing your human risk is just the start. We'll outline the clear step-by-step process you can undertake to tackle your unique human risk areas.
Request your complimentary Human Risk Report (HRR) to understand your employee cyber risk posture and the highest-risk behaviours to address first.
We only use your details to send the report.
Click here to see an example of the Human Risk Report you will receive.