ASIO Director-General Mike Burgess has repeatedly highlighted concerns around foreign interference, espionage and attempts by hostile actors to access and map Australia's critical infrastructure networks.

Speaking publicly throughout the past year, Burgess has warned that state-linked actors are increasingly seeking opportunities to position themselves within essential systems that support everyday life, including energy, communications, transport and water infrastructure.

While these activities may not always result in immediate disruption, security agencies are concerned about the long-term implications. In a period of heightened geopolitical tension, access to critical infrastructure can provide strategic advantages ranging from intelligence gathering to potential future sabotage.

The warnings mirror concerns being raised by intelligence agencies across other Five Eyes nations, including the United States and the United Kingdom, where officials have highlighted growing activity targeting critical national infrastructure. For organisations operating within these sectors, the threat landscape is changing.nCyber security is no longer solely about protecting sensitive data or preventing financial loss. Increasingly, it is about ensuring operational resilience and maintaining the availability of services that communities depend on.

The convergence of cyber security, physical security and national security is also becoming more apparent. A successful attack against critical infrastructure could have consequences extending far beyond a single organisation, potentially impacting supply chains, public services and economic stability. This shift is already influencing government policy.

Recent reforms under Australia's Security of Critical Infrastructure framework have increased obligations on operators to identify risks, strengthen resilience and improve reporting mechanisms.

The threats facing critical infrastructure are becoming more complex, more strategic and increasingly tied to broader geopolitical developments. As Australia continues to strengthen its national resilience agenda, protecting critical infrastructure is no longer simply a compliance requirement.

It is becoming a central component of national security.

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