
Critical Infrastructure Uplift
Sector: Critical Infrastructure (Transport) | Capability: Compliance & Security Remediation | Timeframe: 2024 – 2025
Problem
A critical infrastructure organisation faced significant vulnerabilities and compliance gaps. Industry advisors had suggested its controls were adequate, but government review found otherwise. The company needed to meet legislative obligations under SOCI while managing financial constraints and ensuring operational continuity. Shutting systems down for remediation was not an option, and conflicting advice left leadership without a clear path forward.
Solution
Calexi staff were engaged to lead an in-depth assessment of key technologies including networks, virtualisation, and backup systems. Our approach focused on delivering measurable security improvements without disrupting operations. We:
- Identified redundant and duplicated technologies that could be safely removed to cut costs and simplify management.
- Discovered unused licences and capabilities that, once enabled, provided immediate security uplift.
- Recommended targeted changes that improved compliance and security posture while maintaining uninterrupted operations.
Results
The organisation achieved compliance progress and security improvements while saving hundreds of thousands of dollars. Several major projects and procurements were cancelled after Calexi identified equivalent functionality already included in existing licences. Security controls were uplifted with minimal operational disruption, and stakeholder confidence was restored.
Related Services
OT Security
Securing operational technology, SCADA, and control systems against cyber threats through segmentation, monitoring, and resilience engineering.
ICT Engineering
Designing and integrating resilient network and server infrastructures that enable high availability, scalability, and secure inter-domain operation.
Cyber Security
Implementing Essential Eight, ISM, and SOCI compliance frameworks to uplift organisational security maturity across critical-infrastructure environments.
Proof Points
✓ Immediate cost savings in excess of several hundred thousand dollars
✓ Cancelled multiple unnecessary projects/procurements
✓ Security uplift achieved without operational downtime
✓ Stakeholder recognition of Calexi’s unique real-world engineering expertise