About Us
Excelium is a sovereign, Australian-owned consultancy specialising in cybersecurity, risk management, critical infrastructure protection, and ISMS compliance.
With offices in Canberra, Sydney, Brisbane, and Melbourne, we operate as an end-to-end cyber partner, supporting government, regulated industries, and critical infrastructure entities.
Our mission is to help clients operate securely and without disruption by strengthening their resilience. Combining deep technical expertise with strategic insight, we deliver practical, sustainable, and proportionate solutions aligned with each organisation’s risk environment and regulatory obligations.
Excelium’s integrated model spans cyber, physical, personnel, governance, and supply chain security—creating a truly holistic approach. We help clients prevent, prepare for, respond to, and recover from threats while navigating complex compliance requirements, building confidence and resilience in an increasingly converged risk landscape.
How We Operate
Excelium’s Seven Pillar model positions us as a true full-stack cyber and risk management partner. Our seven service lines combine to deliver end-to-end capability and full solutions across the entire security lifecycle from strategy to assurance, engineering to operations, and compliance to resilience. Each pillar is powerful in its own right and together they form the basis of a service which can provide a holistic resilience framework for our clients.
Assurance & Compliance
Consulting
Critical Infrastructure & National Security
MSSP via Cyber Security Coordination Centre
Security Engineering
Specialist Resource Placement
Security Operations
Our Leadership Team
Matt Lefebvre
CEO & Founder of Excelium & Partner | Consulting
Roman Quaedvlieg
Founder of Excelium & Partner | Critical Infrastructure
Dan Vagulans
Principal Cyber Security Consulting | CSCC
Mark Farley-Thompson
Partner | Security Operations & Engineering
Caswell Lowe
Partner | Assurance & Compliance Lead
Hawa Donzo
Talent Acquisition Coordinator | SRPOur Values
We provide enduring and quality services, fostering long-term relationships between our clients and our team. This approach has allowed us to form enduring relationships and a strong professional reputation within our industry. We found all our actions and interactions based on our company values to ensure consistent and valued service. Our approach incorporates a strong focus on engagement and communication to create collaborative partnerships. We appreciate the benefits gained for all parties through the development of these strong partnerships. Above all, we prioritise value for money for our clients.
Empowering success through shared values
Embracing diversity, fostering unity: Our inclusive culture
Your Trust, Our Commitment: Client Success Above All
At Excelium, we are dedicated to providing affordable, high-quality services that create long-term relationships with our clients. We focus on engagement and communication, fostering strong partnerships that deliver quality outcomes and value for money. Our approach is underpinned by our company values, ensuring consistency in the exceptional services we provide.
Trusted Partnerships: Serving Industry Leaders
At Excelium, we take pride in forging strong relationships with a diverse range of clients, from industry leaders to innovative disruptors, in government and private sectors. Our commitment to providing tailored cyber security solutions and exceptional service has earned us the trust of top organizations across various sectors.
We understand the unique challenges each client faces and dedicate ourselves to helping them navigate the complex cyber landscape with confidence.
By partnering with Excelium, our clients gain access to an expert team dedicated to safeguarding their digital, physical and human assets, enabling continued success.