Christopher McMahon

I protect what matters most—people, intellectual property, operations, and national interests. As a global security executive, I lead enterprise physical and cyber security strategies that enable growth and reduce risk. I have built and scaled programs in high-threat and conflict environments and led organizations of more than 2,300 personnel worldwide. I strengthen resilience against criminal, cyber, and insider threats while positioning security as a strategic business enabler. ► EXECUTIVE STRENGTHS Strategic Vision │ Security Management │ Cyber and Physical Security Strategy │ Information Security Security Policy Development │ Security Program Development & Management │ Incident Response Risk Management │ Regulatory Compliance │ Stakeholder Engagement │ Budget Management ► CAREER SNAPSHOT Chief Security Officer at 3M, leading global enterprise security and resilience across crisis management, insider risk, physical security, GSOC, executive protection, investigations, guard operations, and classified industrial security. I align security strategy with growth, innovation, and operational performance—reducing risk while enabling the business. Former CSO of a defense technology startup and Deputy Director of Operations at NCIS, where I led global investigative and counterintelligence operations. My career includes 24 years with NCIS, service at the National Counterintelligence and Security Center, and decorated intelligence service in the U.S. Navy. I lead proactively—anticipating threats, challenging assumptions, and strengthening security ecosystems to stay ahead of evolving physical, cyber, and insider risks. ► CAREER MILESTONES Security Management: ❏ Created a full scale security program from the ground up ❏ Strengthened national security. ❏ Improved the physical safety of personnel in offices and the field. ❏ Triggered hundreds of actions to address insider threat issues worldwide. ❏ Reduced operational risks. Leadership: ❏ Partnered and influenced across corporate, business, and government agencies internationally. ❏ Delivered global operational excellence by leading a culture transformation. ❏ Increased team collaboration and impact. ► OUTSIDE THE OFFICE I enjoy physical fitness, cooking, reading, collecting records, time spent with family and friends, traveling, and a good story. ► CONTACT ME I’m active on LinkedIn and would enjoy connecting with you. Please feel free to reach out.