Greg, ThreatStream founder, and strategic advisor, is a cybersecurity expert with over 15 years industry experience. He has held CISO, product, consulting, and management roles over the span of his career. He was actively involved battling cyber criminals as a technical adviser to the FBI, the United States Secret Service, and NASA, and has consulted with numerous Fortune 500 companies as a practice-leading consultant for ArcSight (acquired by HP). Greg is an advocate of the open source movement and the original author of Bad Harvest (Formerly ArcOSI), which spawned a revolution in data driven security tools and products.