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Charles Sturt University Most Valuable Lecturers Erdal Ozkaya
Graduate Certificate in Cyber Security
Subject Overview Abstract
This subject provides a broad overview of emerging digital threats and computer crimes, with an emphasis on cyber-stalking, hacktivism, fraud and identity theft, and attacks on critical
infrastructure. The subject also analyses the online underground economy and digital currencies, and cybercrime on the dark web. The subject further explores how dark web crimes are conducted on the surface web in new mediums such as IOT (Internet of Things) and Peer to Peer file sharing systems. Students will also study dark web forensics and mitigating techniques
About CSU
We believe wisdom transforms communities. With tenacity, we help to shape resilient, sustainable regions for the future. Acknowledging the culture and insight of First Nations Australians, our ethos is clearly described by the Wiradjuri phrase, yindyamarra winhanganha, meaning the wisdom of respectfully knowing how to live well in a world worth living in.
Our vision and values
Our mission is to build skills and knowledge in our regions. We offer choice and flexibility to students and work hand-in-hand with our industries and communities in teaching, research and engagement. Growing from our historical roots, we share our knowledge and expertise as a significant regional export industry and we bring strength and learning from this back to our regions.
Through our values, we create a welcoming community experience and learning environment that supports innovative research, advances society and gives back to our regions.
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CISO Insight
Cybersecurity is not a product you buy or a project you complete — it is a continuous operational discipline. The organisations that achieve genuine security maturity are those that embed security thinking into every business decision, invest in people and processes alongside technology, and build resilience for the inevitable day when preventive controls fail.
The Evolving Cybersecurity Landscape
The cybersecurity threat landscape continues to evolve at a pace that challenges even the most well-resourced security teams. AI-powered attacks, supply chain compromises, ransomware-as-a-service operations, and state-sponsored campaigns create a multi-dimensional threat environment that no single technology can address. The organisations that defend most effectively are those that take a risk-based approach — understanding which assets are most critical, which threats are most likely, and where their defensive investments will have the greatest impact.
For CISOs, the challenge is translating this complex threat landscape into actionable strategy that the board can understand and fund. This requires the ability to quantify cyber risk in business terms, prioritise investments based on risk reduction rather than vendor marketing, and communicate security posture in a language that resonates with non-technical stakeholders. The CISO who can articulate “a ransomware attack on our supply chain system would cost us $15 million in downtime” is far more effective than one who reports “we have 47 critical vulnerabilities.”
Building a Defence-in-Depth Strategy
Effective cybersecurity requires layered defences that address the full attack lifecycle — from initial reconnaissance through to data exfiltration and impact. No single control is sufficient, because every control has limitations and can be bypassed by a sufficiently motivated and capable adversary. The goal is to create enough layers that an attacker must overcome multiple independent defences to achieve their objective, while ensuring that detection and response capabilities can identify and contain breaches before they cause catastrophic damage.
Frequently Asked Questions
What is the biggest cybersecurity mistake organisations make?
Treating cybersecurity as a technology problem rather than a business risk management discipline. Organisations that buy security tools without a coherent strategy, skip basic hygiene in favour of advanced solutions, or fail to invest in people and processes alongside technology consistently underperform. The fundamentals — patch management, access control, security awareness, incident response planning — prevent more breaches than any advanced technology.
How should CISOs prioritise their security investments?
Start with a risk assessment that identifies your most critical assets and most likely threats. Prioritise controls that address the highest-risk scenarios first. Ensure basic hygiene is solid before investing in advanced capabilities. Use frameworks like NIST CSF or CIS Controls to structure your programme, and measure progress with metrics that the board can understand and act upon.
Related reading: Visit our Cyber Resilience Hub for enterprise security frameworks, or download the CISO Toolkit for governance templates and playbooks.

