As Australian utility networks become increasingly digital and connected, their vulnerability to cyber threats grows in parallel.
The rapid adoption of IoT devices, edge computing, and remote operations has expanded the attack surface, exposing critical infrastructure to risks ranging from ransomware and nation-state attacks to insider threats and accidental misconfigurations.
For operational technology (OT) teams tasked with managing distributed assets, substations, and field devices, protecting these environments has never been more complex – or more urgent. A single security breach can lead to catastrophic consequences: compromised worker and public safety, extended service disruptions, regulatory penalties, and lasting damage to an organisation’s reputation.
Vulnerabilities hiding in plain sight
Many Australian utilities operate with legacy systems that were never designed with cybersecurity in mind. Fragmented network visibility and insufficient endpoint protection make it difficult to detect and respond to threats effectively. Meanwhile, the rise of connected IoT sensors, edge processing devices, and hybrid mobile workforces means the traditional network perimeter has effectively dissolved.
This evolving threat landscape calls for a fundamental shift in security strategy – one that assumes no device, user, or network segment is inherently trustworthy. The zero-trust security model has emerged as the industry standard, where continuous verification, least privilege access and micro-segmentation protect critical assets.
Zero-trust architecture for tailored utility operations
To meet this challenge head-on, Vertel offers a robust, enterprise-grade security framework leveraging EricssonNetCloud, which is holds up to the unique demands of utility networks. Ericsson’s enterprise wireless solutions blend secure, reliable connectivity with intelligent network control through NetCloud– ensuring operational continuity without compromising security.
By leveraging SD-WAN to segment the network and enforce granular access policies, utilities can isolate OT systems from less secure zones. This limits lateral movement of threats and contains potential breaches.
Ericsson Cradlepoint routers provide multi-carrier cellular connectivity with automatic failover and secured VPN tunnels, ensuring that data remains protected even during network transitions.
Zero-touch provisioning and certificate-based authentication simplify the introduction of new devices, ensuring secure onboarding for IoT and mobile devices – which is critical for utilities deploying thousands of sensors and mobile assets.
The Ericsson NetCloud platform offers centralised management of firewall rules, intrusion detection, and access permissions. By leveraging cloud-managed firewalls and remote access control, utilities can apply real-time policy updates across distributed sites and mobile teams.
This architecture allows utilities to maintain comprehensive visibility and control over every connected endpoint – whether in a remote substation, a mobile crew’s vehicle, or a central control room.
In-vehicle connectivity for mobile crews
One of the standout applications of this security framework is in-vehicle connectivity for mobile field crews. Using ruggedised Ericsson Cradlepoint 5G routers managed by Vertel, utilities maintain secure, always-on network access for technicians in the field. This connectivity supports real-time telemetry, remote diagnostics, and secure communication.
The dual-SIM failover capability ensures crews remain connected even when moving between coverage areas or encountering network outages. Meanwhile, encrypted tunnels and zero-trust device authentication protect sensitive operational data and prevent unauthorised access.
For critical substations and plants, Vertel and Ericsson deploy dual-path connectivity solutions that combine primary 4G/5G cellular networks with secondary backup links, often satellite-based. This setup guarantees uninterrupted service and secure data flow to central control systems.
By leveraging SD-WAN segmentation, utilities isolate OT traffic from corporate IT networks, reducing risk exposure. Cloud-based firewall policies and threat intelligence feeds further enhance protection against distributed denial of service (DDoS) attacks and edge-level intrusion attempts.
Security on every level
Physical security systems – including video surveillance, access control and perimeter detection – increasingly rely on dedicated, separate networks to prevent security breaches from impacting operational systems. Vertel and Ericsson provide simple, secure networks for physical security IoT, ensuring these critical systems remain isolated yet manageable.
Similarly, secure networks for IoT monitoring of modern distribution grids leverage Ericsson Cradlepoint routers, which provide edge processing capabilities to enable local decision-making, data aggregation, and anomaly detection. This approach allows utilities to collect granular, real-time data on voltage, load, and fault conditions while filtering events at the network edge, reducing bandwidth usage, accelerating incident response, and minimising reliance on intermittent backhaul links to maintain uptime.
Built for critical infrastructure
Vertel’s extensive experience as a secure managed services provider ensures its solutions meet full compliance with Australian cybersecurity standards and utility regulations. Together with Ericsson, this dynamic duo delivers:
- Comprehensive network visibility across all OT and field endpoints
- Resilience against sophisticated cyber-attacks, including DDoS and edge-level intrusions
- 24/7 security monitoring with rapid escalation workflows
- A proven path to regulatory compliance and risk mitigation
An energy utility CSIO said that working with Vertel and Ericsson helped them future-proof their network.
“The combination of cellular reliability and security from Vertel and Ericsson gave us the confidence to modernise our network – without introducing risk,” the CSIO said.
Understanding your current security posture is the first step toward a safer, more resilient utility network. Vertel’s security specialists offer no-obligation connectivity and cybersecurity reviews tailored to your organisation’s needs.
Click here to book a review of your infrastructure or visit vertel.com.au
