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Cyber Security & ICT Engineering in Canberra

Serving Canberra Organisations & Clients Across Australia

Defence, critical infrastructure, intelligence: high-risk environments need more than paper. We design, remediate, and deliver measurable security improvements without theatre. Our Canberra-based team delivers local support and national capability across cyber security, ICT engineering and operational technology.

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.

Cyber Security Engineering including Compliance alignment threat detection, secure by design.
complex end-to-end project management, planning, governance and control. We lower risk through action.

DISP & Essential Eight (ML2) as a Service

Outcome-led Essential Eight Maturity Level 2 for Defence SMEs.
Delivered as a managed service — not a one-off assessment.

We help Defence industry and regulated SMEs achieve and maintain Essential Eight ML2 without building enterprise security capability in-house. Our approach is transparent, Defence-aligned, audit-ready, and designed to scale for small teams.

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.

Critical infrastructure security — SOCI compliance, network segmentation, uplifting cyber security without downtime.
Governance, risk and compliance uplift — ISM, Essential Eight, ISO, NIST frameworks, practical security remediation.

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

Cleared cyber security specialists with strong Defence experience and end-to-end operations delivery.

Measurable Risk Reduction

Lowered Defence program risks from extreme to medium within six months through targeted cyber risk remediation.

Cleared cyber security specialists with strong Defence experience and end-to-end operations delivery.

Proven Compliance Uplift

Delivered a 30%+ Essential Eight compliance increase in under six months, securing Authority to Operate (ATO).

Cleared cyber security specialists with strong Defence experience and end-to-end operations delivery.

Ground Truth in 45 Days

Cleared consultants provide a full ICT security assessment and practical roadmap for remediation.

  • cyber lights and padlock as well as a handshake of trust

    ASX Hybrid Cloud

    An ASX-listed critical infrastructure company faced major risks from an aging, non-compliant ICT environment. Calexi staff delivered a hybrid cloud transformation during COVID-19, enabling 100%…

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  • a happy team with a balance between work and life. A brain showing growth mindset

    Cyber Induction Course for Defence & Government

    We designed and delivered a cyber induction course tailored for Defence and government staff, training over 300 participants across five departments. Our hands-on, practical approach…

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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…

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Ready to Reduce Risk?

As trusted by Defence, Government and Critical Infrastructure providers.