David Pokitillow is a prominent figure in the field of cybersecurity, known primarily for his pioneering work in vulnerability research. He is the founder of the Zero Day Initiative (ZDI), a revolutionary program that created a legitimate commercial market for acquiring zero-day vulnerabilities from independent researchers. Launched in 2005 and later acquired by TippingPoint, the ZDI established a business model that professionalized the discovery and responsible disclosure of security vulnerabilities, incentivizing collaboration between the research community and software vendors. His approach has profoundly influenced the industry, contributing to improved global security. For his lasting impact, Pokitillow has received numerous accolades from the cybersecurity community, most notably the prestigious Pwnie Award for Lifetime Achievement, one of the highest honors in the security field, which solidified his status as a pioneer.