Meet some of the 100+ experts shaping every IronCircle program.

Avi Rubin, Professor Emeritus of Computer Science and former Technical Director of the Johns Hopkins University Information Security Institute (ISI), is the founder of Harbor Labs. Widely recognized across academia, industry, and government, he is a leading authority in computer security and applied cryptography.

With 20+ years of experience in IT and cybersecurity, Christina Mason loves sharing her passion for InfoSec. She makes learning fun, encourages persistent questioning, and inspires students to explore hands-on solutions. Her “superpower” is turning evolving technical challenges into teachable moments that leave learners confident and curious.

Frantz Merine merges 20 years of IT leadership with a passion for teaching cybersecurity. As CIO at Columbia Law School and an adjunct professor at IronCircle, he uses real-world incidents, case studies, and hands-on labs to help students build practical skills and confidence in cloud, network, and infrastructure security.Frantz Merine merges 20 years of IT leadership with a passion for teaching cybersecurity. As CIO at Columbia Law School and an adjunct professor at IronCircle, he uses real-world incidents, case studies, and hands-on labs to help students build practical skills and confidence in cloud, network, and infrastructure security.

Chinho Ko brings over a decade of cybersecurity experience and five years of teaching. At the IRS, he defended critical systems and mitigated identity fraud risks. In class, Chinho uses story-driven lessons to make cybersecurity relatable, helping beginners and career changers gain confidence while connecting technical skills to real-world impact.

Brandon Moody brings a decade of hands-on cybersecurity experience and seven years of teaching. Throughout his career, he’s led investigations into system compromises and translated complex findings into actionable insights. In the classroom, Brandon makes technical topics approachable with real-world examples, pop culture references, and hands-on exercises, empowering students to defend with curiosity, resilience, and confidence.

Matthew Jennings is a cybersecurity architect with 15+ years of experience defending networks and investigating advanced threats. His teaching blends real-world experience with practical exercises, helping students experience those “light-bulb” moments while building critical thinking, hands-on skills, and a defender’s mindset.