Terry has 30 years of experience working in cybersecurity, with over twenty years of focus on advanced threat-risk modeling techniques. He is the chief architect of the SecurITree attack tree-based threat analysis software. Terry has trained analysts in the use of attack tree analysis in many fields, including aerospace, defense, intelligence, medical devices, embedded (IoT) devices, industrial control systems and conventional information technology. He is recognized as an expert in the field and has consulted for leading companies, government agencies and national laboratories in many countries around the world. Terry has a BSc(physics) and an MSc(computer science). He is a CISSP.