Critical infrastructure systems such as energy, water, and telecommunications are increasingly being targeted by cyberattacks, supply chain disruptions, and other forms of interference. In response to these growing threats, the Australian government introduced the Security of Critical Infrastructure (SOCI) Act, a law designed to safeguard essential services that Australians rely on daily.

 

For businesses that own or operate infrastructure considered “critical,” this legislation imposes mandatory responsibilities, including identifying key assets, reporting cyber incidents, and implementing proactive risk management. The law has expanded in recent years to cover more sectors and impose stricter requirements.

 

The SOCI Act is essential to avoid penalties and stay operationally resilient. Let’s explore what it is and to whom it applies.

 

Quick read: What is cyber crime? How to protect your organization

 

What is the SOCI Act?

 

The Security of Critical Infrastructure Act 2018 (SOCI Act) is an Australian federal law that protects key systems and services from threats that could compromise national security, public safety, or the economy.

 

Originally limited to four sectors: electricity, water, gas, and ports, the Act was significantly expanded through reforms passed in 2021 and 2022. The new framework now includes additional sectors, tighter reporting requirements, and a stronger focus on cyber risk.

 

The SOCI Act is administered by the Department of Home Affairs and supported by the Australian Cyber Security Centre (ACSC). It gives the government tools to identify, assess, and manage risks to critical infrastructure, and to intervene in emergencies if necessary.

 

Who does the SOCI Act apply to?

 

The SOCI Act applies to “responsible entities”, companies and organizations that own or operate systems deemed critical by the Australian government.

 

As of the latest reforms, the following 11 sectors fall under the Act’s scope:

 

• Energy: electricity, gas, fuel.
• Water and sewerage.
• Communications: telecommunications, broadcasting.
• Financial services and markets.
• Data storage or processing.
• Healthcare and medical.
• Transport: aviation, maritime, rail, road.
• Higher education and research.
• Food and groceries.
• Space technology.
• Defense industry.

 

Entities in these sectors may be required to register assets, report incidents, implement risk programs, or respond to government directions, depending on how their assets are classified.

 

 

Key obligations under the SOCI Act

 

Depending on the type and significance of your infrastructure, the SOCI Act imposes different levels of obligation. Here are the four core requirements:

 

1. Registering critical infrastructure assets

 

Organizations must provide the government with accurate details about their critical infrastructure assets. This includes ownership structure, location, and operational responsibilities. The aim is to maintain national visibility over essential systems.

 

2. Mandatory cyber incident reporting

 

If a cyberattack impacts or is likely to impact operations, it must be reported to the Australian Cyber Security Centre:

 

• Within 12 hours for incidents causing a significant impact.
• Within 72 hours for incidents with less severe consequences.

 

This requirement ensures a coordinated national response and faster mitigation.

 

3. Risk management programs (RMPs)

 

Entities that own “systems of national significance” (SoNS) must implement a formal risk management program. This includes:

 

• Identifying and assessing material risks.
• Implementing mitigation controls.
• Regularly reviewing and updating the program.
• Reporting annually to the government.

 

4. Government assistance powers

 

In extreme cases, where threats pose an immediate risk to national security or public safety, the government can step in and issue directions to the affected entity. These powers are considered a last resort but must be respected under law.

 

Penalties for non-compliance with the SOCI Act

 

Non-compliance with the SOCI Act carries serious consequences, including:

 

• Civil penalties: The government may impose fines on entities that fail to report incidents, register assets, or implement required controls.

 

• Legal enforcement: In extreme cases, failure to comply could result in court action or administrative orders.

 

• Reputational damage: Missing a reporting deadline or failing an audit can damage trust with customers, partners, and regulators.

 

• Operational disruption: Being unprepared for cyber incidents or audits can slow down recovery, erode resilience, and lead to long-term costs.

 

The government has signaled that enforcement will increase over time, especially as sectors mature in their compliance obligations.

 

Quick read: PII examples and how mishandling them can lead to compliance violations

 

How to prepare for compliance with the SOCI Act?

 

Preparing for SOCI compliance involves more than simply meeting deadlines. It requires a structured approach to asset management, cyber readiness, and risk governance. 

 

Here’s how organizations can get started:

 

1. Identify and classify critical assets

 

Map out all infrastructure, systems, and data assets that fall within regulated sectors. Determine which ones qualify as critical, and ensure they are registered as required.

 

2. Develop internal reporting protocols

 

Establish clear procedures for identifying, escalating, and reporting cyber incidents. Ensure all stakeholders know their roles and understand what types of events trigger mandatory reporting.

 

3. Create or refine your risk management program

 

Build a documented framework that:

 

• Assesses physical, cyber, personnel, and supply chain risks.
• Implements mitigation strategies.
• Assigns ownership of each control.
• Schedules regular reviews and updates.

 

4. Train your teams

 

Ensure both technical and non-technical staff are aware of their responsibilities under the SOCI Act. This includes knowing how to recognize a reportable incident, how to escalate concerns, and how to support compliance efforts.

 

5. Review third-party relationships

 

If your infrastructure relies on external vendors or service providers, ensure their operations meet SOCI-related expectations. Consider including compliance clauses in contracts and regularly auditing vendor performance to ensure adherence to these standards.

 

6. Document everything

 

From asset registration to incident reports, detailed documentation is essential for audits and government reviews. Maintain clear records of risk assessments, policy changes, staff training, and incident responses.

 

Strengthen your security and compliance posture with CyberArrow

 

Keeping up with evolving regulations and security requirements takes more than policies; it takes the right tools. CyberArrow GRC platform offers a smarter, unified way to manage governance, risk, and compliance across your organization.

 

Key features include: 

 

• Automated evidence collection for faster, audit-ready compliance.
• Real-time KPI monitoring across compliance and security metrics.
• Policy and document management with version control and access logs
• Third-party risk management to evaluate and monitor vendor compliance.
• Asset inventory tracking to maintain visibility of critical systems and data.
• Built-in security reporting to simplify board and auditor communication.