Who We Are

About SIX3RO™

The emergence of general-purpose quantum computing is expected within the next 2-5 years. Quantum computing will break the cryptography that underpins everything from the financial system to defense to your car’s keyless remote. The cybersecurity industry is already failing to provide information security due to reliance on legacy architectures that are inherently vulnerable. Big Tech’s preparations for the coming quantum threat are limited, technologically flawed, and may be making the problem worse.

The market has an urgent need to address both the quantum threat and cybersecurity industry’s architectural failures by providing truly secure and private methods to exchange information between organizations.

SIX3RO™ (“six-air-o”) believes that seamless, secure collaboration and information exchange with your entire business constellation (e.g., partners, customers, vendors, and candidates) across organization boundaries is essential to thrive.

Unfortunately, contemporary solutions fall short, relying on legacy architectures that expose systemic vulnerabilities, enable insider threats, and force dependency on third parties’ storage and security (over which you have no direct control). Additionally, attacks predicated on the emergence of quantum computing, which will make legacy cryptography obsolete, and compromise information security at its core, are already taking place.

SIX3RO™ revolutionizes this landscape with products that address both architectural and cryptographic challenges. PortalSIX™, our dynamic, private, and secure information exchange portal is easy to deploy, cost-effective, and eliminates reliance on vendor-controlled systems. By mitigating architectural vulnerabilities, eliminating insider and external threats, and leveraging post-quantum cryptography, SIX3RO™ ensures security and privacy that enable customers to thrive. SIX3RO™’s fusion of innovative technologies, including decentralization, blockchain, and post-quantum cryptography, delivers a platform that unifies business, security, and productivity.

SIX3RO™ empowers customers, lifting the burden of security and information exchange management while future-proofing against a quantum Pearl Harbor, thus transforming the information exchange landscape. With SIX3RO™, customers focus on their work while leaving the other worries behind.

Leading your SIX3RO experience

Our Leadership Team

Adam Firestone, Chief Executive Officer

Adam Firestone, CEO and Co-Founder of SIX3RO, drives the company’s strategic vision to deliver quantum-secure communications and information exchange. With 30 years of expertise in systems engineering, cryptography, decentralized systems, and entrepreneurship, he has led the design and delivery of national security and commercial solutions that enhance efficiency and empower enterprises. A former US Army officer, Adam holds seven US patents in multilevel security, cryptography, and decentralized information systems and has taught graduate-level cryptography, cybersecurity engineering, and systems engineering at Georgetown and George Mason Universities. As Editor-in-Chief of United States Cybersecurity Magazine, he shapes industry discourse. Adam is co-author of a historical analysis of global military procurement policies during wartime and, in his free time, he enjoys rucking in Northern Virginia, writing about tech startup leadership, serving on his local CERT, and studying emergency first aid.

Hilary MacMillan, Chief Technology Officer

Hilary MacMillan, CTO and Co-Founder of SIX3RO, oversees the design, development, and delivery of its cutting-edge product portfolio. With expertise in systems engineering, cryptographic applications, and technology innovation, she transforms ideas into secure, post-quantum solutions. Hilary has held engineering leadership roles in tech startups and taught graduate-level systems engineering and cryptography at Georgetown University. She holds six US patents in cryptography and decentralized systems. With a bachelor’s in electrical engineering and a master’s in systems engineering, Hilary drives SIX3RO’s mission to enable quantum-secure information exchange. In her spare time, she practices pointed pen calligraphy and enjoys rucking in Northern Virginia.

Anna Murray, Chief Commercial Officer 

Anna Murray, CCO and Co-Founder of SIX3RO, leads marketing and commercialization of its innovative product line. With over 20 years in entrepreneurship, technology consulting, and enterprise software development, she has earned multiple business leadership awards and recognition from Fortune 500 companies. Previously, Anna founded emedia, LLC, a digital-transformation consultancy, and authored three books on software development and cybersecurity. Her strategic vision and proven track record strengthen SIX3RO’s mission to deliver quantum-secure solutions. Passionate about pushing technological boundaries, Anna brings creativity and expertise to her role. When not driving SIX3RO’s growth, she enjoys horseback riding, writing novels, and relaxing with her whippet in New York City.