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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.

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.

  • 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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  • defence security analyst looking at cyber metrics on screens

    Building a Sovereign Cyber Training Capability for Defence

    Defence faced mounting challenges in building a skilled cyber workforce, from costly overseas training to critical skills gaps. Calexi staff designed and delivered a sovereign…

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  • A military officer in camouflage uniform stands before a futuristic holographic interface. The display shows a glowing radar, world map, graphs, and charts, with a central glowing arrow pointing upward labeled “Strategic Alignment.” The scene symbolizes clarity, visibility, and aligning Defence cyber capabilities with strategic objectives.

    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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Ready to Reduce Risk?

As trusted by Defence, Government and Critical Infrastructure providers.