William David M.

About William David M.

Senior Information Security Architect with nearly ten years of experience securing enterprise environments in healthcare, financial services, and higher education. I focus on identity-centric security architecture, defensive engineering, and translating technical risk into measurable business outcomes. I connect strategic architecture and hands-on execution, delivering results in high-risk settings where system uptime and data accuracy are critical. My work reduced Active Directory security gaps by 74%, Azure privileged identity risk by 96%, lateral attack paths by 82%, and SIEM false positives by 83%, improving incident response and alert accuracy.Currently, I architect and harden identity and directory services in healthcare, where downtime impacts patient safety. I lead security assessments, design privileged access controls, engineer high-confidence detections aligned to MITRE ATT & CK, and eliminate attack paths using offensive security and automation.Previously, I was a Cybersecurity Risk Management Analyst with the FDIC. I assessed the security of over 50 financial institutions during 100+ organizational reviews of financial institutions, managed service providers, and cloud providers. I advised executives on authentication, encryption, incident response, vulnerability management, patching, and resilience, and translated technical findings into actionable risk decisions using simple language.Prior to my work at the FDIC, I led the delivery of a fully operational Security Operations Center. I designed and implemented a SIEM from the ground up, managed teams, and accelerated lagging security programs.My focus: measurable risk reduction, resilient identity architecture, and operational security programs.

Experience

1. Senior Systems Security Engineer

   Muckleshoot Indian Tribe

   Mar 2026 — Present

Education

• Capitol Technology University

  Bachelor's degree, Bachelor of Science in Cybersecurity

  2016 — 2019

• SANS Technology Institute

  Master's degree, Master of Science in Information Security Engineering (MSISE)