Cyber Security & ICT Engineering in Canberra
We innovate where others won’t
Defence, critical infrastructure, intelligence: high-risk environments need more than paper. We design, remediate, and deliver measurable security improvements without theatre.
Secure System Design & Remediation
We design, harden, and remediate ICT systems and cyber security environments in Canberra and nationwide. From architecture through to accreditation, our cleared consultants deliver practical fixes that lower risk in Defence, government, and critical infrastructure.
Program Recovery & Delivery Assurance
We reset stalled ICT programs and restore delivery confidence. With Defence ICT and systems engineering expertise, we clarify scope, rebuild governance, and land milestones your executives can prove.
Operational Technology & Critical Infrastructure Security
We help national infrastructure providers achieve SOCI Act compliance and strengthen their OT environments without disruption. Our team applies network segmentation, security uplift, and risk management across leading frameworks (Essential Eight, ISM, ISO, and NIST) to deliver actionable risk reduction balanced with operational needs.
GRC & Essential Eight Uplift
In 45 days we map your organisation’s real posture, then drive uplift across Essential Eight, PSPF, and ISM compliance. Our evidence-based approach combines cyber risk management, governance and audit-ready consulting, delivering measurable results and Authority to Operate (ATO).
Why Calexi: Cleared Cyber Security Specialists
Measurable Risk Reduction
Lowered Defence program risks from extreme to medium within six months through targeted cyber risk remediation.
Proven Compliance Uplift
Delivered a 30%+ Essential Eight compliance increase in under six months, securing Authority to Operate (ATO).
Ground Truth in 45 Days
Cleared consultants provide a full ICT security assessment and practical roadmap for remediation.
Featured Work: Measurable Risk Reduction & Compliance Uplift
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Critical Infrastructure Project Remediation
A transport critical infrastructure project was at risk due to cascading system failures caused by poor maintenance in a high-security environment. Calexi rapidly stabilised the…
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Defence Capability Review
Calexi completed a Defence cyber capability review in just six weeks, engaging hundreds of stakeholders to provide clear visibility of the current state, align future…
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Cyber Tabletop Exercises
Defence required cyber exercises that reflected its unique environment and policies. Calexi delivered dynamic cyber tabletop exercises that improved response plans, created new playbooks, and…
Ready to Reduce Risk?
As trusted by Defence, Government and Critical Infrastructure providers.