Keiron Frankum

WORK HISTORY

ABOUT KEIRON FRANKUM

With over 30 years of experience in cybersecurity architecture, I specialize in securing complex IT and OT environments, strengthening identity ecosystems, and designing resilient Microsoft-driven security frameworks. I’m known for transforming vulnerable infrastructures into highly governed, Zero-Trust–aligned environments that withstand modern threats. My expertise spans Active Directory, Entra ID, MIM, PIM, Microsoft E5 Security Stack, Sentinel, Defender XDR, Zero Trust, ICS/SCADA connectivity, and identity governance, combining deep technical engineering with strategic architectural leadership across global enterprise environments.Throughout my career, I’ve delivered measurable improvements in security resilience by reducing more than 40% of critical AD vulnerabilities through continuous attack-path analysis using Purple Knight, BloodHound, PingCastle, and Defender for Cloud. I have modernized legacy ESAE into Azure-based PAW ecosystems, integrated Sentinel with Splunk to improve SOC visibility by 30%, and designed secure Conditional Access, RBAC, and JIT/JEA governance aligned with NIST, CIS, and ISO 27001 standards. My work consistently strengthens identity posture, accelerates detection, and protects hybrid environments from identity-based attacks and lateral movement.I am known for my calm, analytical, and structured approach, balancing clarity of communication with hands-on technical depth and a strong sense of accountability. My working style is collaborative, solution-driven, and grounded in continuous learning and integrity. If you’re looking to connect with a cybersecurity architect who brings decades of experience, deep Microsoft security expertise, and a proven track record of securing enterprise infrastructures, I’m always open to conversations around identity security, architecture challenges, and opportunities to build stronger, more resilient systems.