New Hampshire native Christopher Plummer is the Senior Cybersecurity Architect at Dartmouth Health, where he specializes in defending complex healthcare infrastructure against evolving digital threats. With a career rooted in high-stakes environments, Plummer spent over a decade as a civilian contractor for the U.S. Navy, providing critical support for the nation’s submarine maintenance program. He gained international recognition in 2023 for discovering a major vulnerability in Google’s Gmail BIMI (blue checkmark) verification system, a find that forced a global security overhaul after he successfully challenged Google’s initial dismissal of the flaw. A vocal advocate for community-driven defense, Plummer’s extracurriculars include the Health Sector Coordinating Council, the Health-ISAC Membership Committee, and several state and regional information sharing organizations.