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Our story

However you found us, we're glad you're here. Let us tell you our story...

De Stefano & Co is a defence-focused management and security consultancy that assists businesses from across Australia and the globe in navigating the complex Australian defence industry environment.


Our Director & Principal, Emilio De Stefano, founded De Stefano & Co in 2015. After spending the first 10 years of his career working in electronic warfare for the likes of BAE Systems prior to joining a heavy engineering SME working in support of the Collins Class Submarines, Emilio was given the opportunity to undertake some study in the US. It was there he realised that he wanted to do something more for the broader industry base, so he came back, handed in his resignation, and De Stefano & Co was born...


Soon after it was established, companies started coming to De Stefano & Co asking for help to break into the sector and win work. For many, the defence sector is a complex and highly bureaucratic beast, with those brave enough to enter its lair quickly learning that nothing happens overnight, and there are many hurdles to jump over along the way. Given Emilio's background and experience in the sector, he was well-placed to support those companies on their journey.

Fast forward to the present, and De Stefano & Co is now a team of 17 defence and security professionals, highly experienced in their respective fields. Visit the Our team page for more information about our key team members.

What we do


As a 100% Australian owned and operated business, we have unrivalled experience, knowledge and networks, and we are specialists in strategy and security.


Our team has decades of experience in supporting clients to achieve their growth ambitions within the defence sector. We have expertise across Air, Land, Sea, Space, Cyber and Defence Estate & Infrastructure, so when we refer to ourselves as Defence Industry Experts, we're not joking.


In terms of strategy, we can provide an assessment of your business that can help to validate the defence sector opportunity quickly and cost-effectively (before you commit to entering the sector), or we can work with you to develop a long-term strategy designed to accelerate your defence sector journey. Our team can also help you develop a new cyber security strategy for your business, or review your current strategy, ensuring that it is relevant, fit-for-purpose, and offers appropriate and affordable controls and protection for your business, customers and employers.
In addition to strategy, we offer a range of protective security services, helping companies to not only meet the requirements of working with Defence, but protect their business from external threats.


These services include:

  • Defence Industry Security Program (DISP) Membership Attainment

  • DISP Ongoing Compliance Assurance (OCA™)

  • Cyber Security Services

  • Essential Eight Uplift

  • IRAP and ISM Services

  • ISO27001 Services

  • Personnel Security

  • Physical Security Uplift

  • Training and education

Ready to get started on your project?


Our team of defence and security experts are dedicated and passionate about what they do, helping to ensure great outcomes for our clients. You don't need to take our word for it either. See what our clients have to say on our Testimonials page.


If you have a project we can support you with, get in touch today. We'd love to hear from you.

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