About Us
Antigen’s mission is to stop crime, fight fraud, and tackle threats for organizations to protect our community, people, and way of life.
By focusing on managing cyber risk from a holistic perspective, Antigen can provide a variety of services to businesses that include incident response, recovery engineering, managed detection & response and advanced security stacks that include financial coverage.
Resilience by Design.
Founded in 2020 by security experts in the Detroit, Michigan area, Antigen Security was named a CRN Emerging Technology Vendor in 2022.
Antigen’s founders met in the Information Security community in Michigan, and have continued to show their passion for community, education and helping others by giving their time to special projects, conferences, and creating educational material across Michigan and at information security conferences throughout the US.
Practitioners and Partners
The Antigen Security team is drawn from the best and brightest in the information security community, including top researchers, speakers, analysts, and executives who live and breathe security on a daily basis, both in their personal and professional lives.
Our practitioner’s credentials include, but are not limited to:
CISSP
CISA
CISM
OSCP
GCFA
GREM
GNFA
GASF
Our Team
Steven Legg
Co-Founder, Chief Executive Officer
Steven Legg has over 19 years of experience in the Information Technology and Information Security fields, and spent the last eight years focusing on governance, risk, and compliance within security programs while most recently building a strategic services practice for a Managed Detection & Response firm.
In leadership roles, Steven has developed programs that specifically address security maturity, architecture, and risk in addition to other domains such as Incident Response. His Virtual CISO duties led him to work with regulatory organizations including the SEC, NERC, OEB, and more.
He unleashes his passion for the security community by leading a local security group (#misec), organizing B-Sides & Converge Detroit, and mentoring local folks in the industry.
Steven has held 25+ industry certifications over his career, and enjoys focusing on new challenges to grow and strengthen the organization.
Kyle Andrus
Co-Founder
Kyle Andrus has had a focus in Information Technology for over fifteen years with the last seven years being dedicated to Digital Forensics and Incident Response. Kyle took lead on building forensic analyst capabilities and knowledge at a Fortune 500 company by excelling at endpoint detection & response, disk & memory forensics, detection engineering, malware analysis, and creating forensic procedures for industrial control systems. He also worked with local law enforcement, FBI, and Homeland Security on a variety of cyber threats and computer forensic related cases.
He continues to show his passion and support for the security community by leading a local security group (#misec), being an organizer for B-Sides Detroit & Converge, and giving presentations covering a variety of Digital Forensic & Incident Response topics.
Kyle currently holds SANS certificates for the GCFA, GCFA, and GREM.
Brad McMahon
Chief Technology Officer
Brad McMahon brings more than 20 years of experience across software development, technology strategy, cybersecurity, and highly regulated government environments. Beginning his career as a programmer, he developed a deep understanding of how technology is built and how it can simplify work, improve customer experiences, and support business growth.
His background includes extensive work with FedRAMP, Department of Defense Impact Level 2 and 5 environments, and Microsoft GCC High projects. He has also performed security and digital forensics work supporting Department of Homeland Security headquarters and previously held a Top Secret security clearance.
In leadership roles, Brad brings together people, processes, technology, and security requirements to solve practical problems and deliver meaningful results without unnecessary complexity. He believes in continuous learning, leading by example, and applying proven practices while remaining open to a better path forward.