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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.

Managed IT & Cyber Services

We provide end-to-end Managed IT Services and Managed Security Services that keep your business secure, reliable and productive. From day-to-day IT support and Microsoft 365 management through to cyber security, compliance and strategic advice, we become your trusted technology partner so you don’t need to coordinate multiple providers.

Calexi is your complete IT & Cyber Security Partner

Managed IT Services (MSP), Managed Security Services (MSSP), Microsoft 365, cloud, infrastructure, networking, cyber security, Essential Eight, DISP, compliance, threat detection, vulnerability management, secure-by-design architecture, backup and disaster recovery, identity and access management, monitoring, incident response and virtual CIO services.

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 glowing digital shield with a central padlock symbol, surrounded by eight evenly spaced turquoise-blue nodes connected in a circular pattern. The background features a dark blue gradient with subtle circuit lines, symbolizing cyber security, Essential Eight compliance, and Defence-level protection.

    Cyber Security Tabletop Exercise for Large Organisations

    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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  • A glowing digital shield symbolising Defence assurance stands at the centre, surrounded by four illuminated pillars. Each pillar features an icon representing a DISP domain: governance, physical security, personnel security, and information & cyber security. The image uses blue and teal tones with subtle circuitry patterns to convey trust, structure, and compliance.

    DISP – Defence Industry Security Program Uplift

    A Defence SME needed DISP compliance but faced limited resources and low security maturity. Calexi delivered a full uplift within 6 months, achieving Maturity Level…

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  • critical infrastructure elements security

    Critical Infrastructure Uplift

    A transport-sector organisation faced compliance gaps and conflicting advice. Calexi identified redundant technology, leveraged existing licences, and implemented targeted improvements, saving hundreds of thousands while…

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Ready to Reduce Risk?

As trusted by Defence, Government and Critical Infrastructure providers.