Top 5 OT Cyber Security Threats Facing Australian Critical Infrastructure

 

Operational Technology (OT) cyber security is now a key issue for Australian industry. As critical industrial infrastructure becomes more connected, the risks continue to grow. The Security of Critical Infrastructure (SOCI) Act places stronger obligations on asset owners to protect their OT environments, yet many are still exposed. Cromarty Automation has been helping protect these networks for over 35 years through hands-on engineering and real-world expertise. Here are the top threats facing Australian infrastructure today and how we help prevent them.

1. Ransomware Attacks on Control Systems

Ransomware is no longer limited to business systems. Attacks on SCADA and PLC networks can stop operations, interrupt public services and create major safety concerns. Australian utilities and energy providers are increasingly targeted by cyber groups. Cromarty builds defence-in-depth frameworks with secure access controls, isolation layers and remote support protocols designed specifically for industrial networks. Explore our cyber security for Industrial Networks offering.

2. Remote Access Without Proper Controls

Remote support is now standard across energy assets like renewables energy assets and water infrastructure. But if not managed properly, it opens up major security gaps. Cromarty design secure access paths that encrypt traffic, limit user privileges and keep visibility high. Our solutions help meet compliance standards like SOCI and support ongoing monitoring and response. Learn more about our SCADA and Control Systems capabilities.

3. Unpatched & Legacy Equipment

Many industrial environments still rely on control and automation systems that are outdated and no longer supported. This older hardware often has no built-in security features. Cromarty supports system upgrades and modernisation plans that allow sites to move forward while reducing downtime. Our team works across old and new systems to build safer, more reliable control environments. Discover our Industrial Automation solutions.

4. Poor User Access Governance

Weak password policies, shared logins and poor access controls remain a common risk. These gaps can allow misuse by internal users or external threats to gain entry. Cromarty implements strict access layers, full audit trails and role-based control aligned with best practice standards to ensure accountability and reduce risk. Our Cyber Security services provide comprehensive support.

5. Lack of OT Network Visibility

Too often, threats go unnoticed in OT environments due to a lack of monitoring. Many sites still operate without alerts for unusual behaviour or external intrusion. Cromarty helps our clients deploy tools that track and monitor traffic across industrial networks in real time, giving asset owners the ability to detect and respond early. Our Cyber Security services include monitoring and threat detection.

How Cromarty Supports OT Security

Cromarty designs, builds and integrates automation systems across critical industrial infrastructure. We take a practical and collaborative approach to OT security that includes system hardening, risk assessments and secure access frameworks. From SCADA to field devices, our solutions are built to protect your network from evolving threats and stay aligned with regulatory standards.

🔗 Learn about our Cyber Security Services

🔗 See how we support Cyber Security in Renewable Energy Systems

Let’s Secure Your Operations

Australia’s industrial and utility sectors are facing increasing pressure to maintain service continuity, meet regulatory expectations and defend against sophisticated cyber threats. Cromarty works directly with Chief Information Security Officers, OT Managers, energy providers, water authorities and public infrastructure leaders to strengthen the security of their operational systems.

Our team brings deep engineering expertise to every engagement, helping organisations identify risks, improve network defences and apply practical, proven cyber security measures across OT environments. With a focus on compliance, visibility and secure connectivity, we support organisations in meeting the requirements of the SOCI Act while enhancing overall system integrity and reliability.

Contact us about OT cyber security and protect your operational networks with confidence.