Building Utility Resilience in an Era of Cyber Risk and Disruption

Australian regulators and industry bodies are raising expectations for operational resilience across utilities, energy trading and critical infrastructure as cyber incidents, service disruptions and supplier failures pose a direct threat to essential services.

According to the Australian Signals Directorate's (ASD) Annual Cyber Threat Report 2024–25, The ASD received more than 84,700 cybercrime reports over a 12-month period, averaging one report every six minutes. The ASD also responded to more than 1,200 cyber security incidents, an 11% increase from 2023–24, highlighting the growing operational pressure facing Australian organisations.

For utilities, these risks can result in service outages, operational downtime, and systemic exposure across interconnected energy and water networks.

Why resilience is becoming more strictly enforced in Australia

In Australia, operational resilience expectations are being shaped by a combination of regulatory, security and market pressures.

The Security of Critical Infrastructure (SOCI) framework continues to evolve, with proposed reforms aimed at strengthening risk management and improving how critical infrastructure operators prepare for and respond to emerging cyber threats, including how you report on a suspected incident. The mandate is to report to the Australian Cyber Security Centre (ACSC) and the Australian Federal Police (AFP) as soon as you are notified and often without the full story.  This makes a critical infrastructure a more attractive target to hackers, as the public fall out has a bigger impact, as we've seen with Origin Energy in recent weeks and major attacks on Australia's telecommunications networks. 

Australia's energy regulators and market operators are also placing increasing emphasis on resilience as the National Electricity Market manages growing demand, ageing assets, extreme weather events and an increasingly complex cyber threat landscape.

Across these frameworks, organisations are facing a clear shift towards demonstrating resilience through testing, evidence and operational capability, rather than relying solely on documented plans.

What's driving urgency in the Australian utilities sector

Australia's critical infrastructure operators face an increasingly complex cyber threat environment.  The ASD reported that the sector accounted for 13% of cyber security incidents responded to by the ACSC in 2024–25, while both state-sponsored actors and cybercriminals continue to target organisations that provide essential services.

For utilities, this risk is amplified by the complexity of their operating environments. Many organisations rely on legacy operational technology (OT) that cannot be easily replaced, geographically distributed infrastructure across remote and regional locations, and extensive third-party ecosystems supporting areas such as cloud services, billing platforms and trading operations. 

These interconnected environments mean a failure in one area can quickly affect broader energy generation, distribution or market operations.

What organisations increasingly need to demonstrate

Australian regulators and industry bodies are placing greater emphasis on whether critical service providers can demonstrate resilience in practice. This includes understanding critical services, identifying dependencies across technology environments and suppliers, and assessing how disruptions could affect customers and market operations.

Building resilience across critical infrastructure requires greater visibility across complex IT and OT environments, stronger dependency mapping, and regular testing of response and recovery capabilities against realistic scenarios such as cyber incidents, extreme weather events and supplier disruptions.

There is also growing focus on third-party risk, as utilities become increasingly reliant on external technology providers, cloud platforms, and managed services. Organisations must be able to demonstrate that they understand these dependencies and have appropriate measures in place to maintain continuity.

The rising cost of failure

Resilience failures rarely remain technical incidents, often resulting in regulatory, commercial and reputational consequences. 

In highly interconnected energy markets, disruption can quickly extend beyond a single organisation and affect broader system stability.

The cyber reality behind resilience expectations

The increasing cyber threat landscape reinforces why resilience and cybersecurity must be addressed together.

As Australia's energy system becomes more decentralised, digital and climate-exposed, resilience is shifting from a defensive requirement to a core enabler of operational stability and market participation.

Ultimately, resilience will be judged not by the strength of an organisation's plans on paper, but by its ability to keep essential services operating when disruption strikes. For Australia's utilities, that makes resilience a strategic priority, one that underpins regulatory confidence, market stability and public trust.

Bridging the gap between policy and operational reality

Across Australia's utilities and energy sector, many organisations still face a gap between resilience plans and resilience in practice.

Closing this gap requires organisations to move beyond compliance documentation and validate how systems, teams and suppliers perform under real disruption conditions. This includes strengthening disaster and cyber recovery capabilities, regularly testing response processes and generating evidence that demonstrates resilience during audits and reviews.

This is where specialised resilience and managed service providers can play an important role, helping organisations translate resilience requirements into operational capabilities that can be tested, measured and improved over time.

Resilience as a competitive advantage in Australia

Organisations that invest in strong resilience capabilities gain benefits beyond regulatory compliance, including stronger relationships with regulators and market operators, greater confidence in digital transformation initiatives, improved readiness for energy transition challenges, and increased trust from investors and partners.

As Australia's energy system becomes more decentralised, digital, and climate-exposed, resilience is shifting from a defensive requirement to a core enabler of operational stability and market participation.