Throughout his career, Darrell has successfully started and sold seven Defense and Cybersecurity-related technology companies. After a successful career in the Radio Frequency field, he focused his efforts in cybersecurity in the wake of September 11, 2001, Darrell is regarded as an expert in this field and, as such, is sought after as a speaker in multiple venues, particularly about future threats regarding the risks and responsibilities of offensive cyber operations. As the Founder and CTO of Rsignia he recognized the real problem and risks of cybersecurity mitigation vis a vis real-time cyber-attacks. Under his direction, Rsignia’s engineers worked closely with the DoD and Intelligence community to address current cyber warfare issues such as ID spoofing, location attribution, fiber tapping, sonnet capture, layer correlations, and more. He has authored many technical papers on cyber security threat mitigation and various kinetic and non-kinetic approaches and blending of the two. Previously, he won the American Security Challenge for his white paper on strategic mitigation in cyber environments. He currently serves on several BoA's with tech firms as well as serving as CTO for Endeavor Technology Group. He holds a B.S. in Electrical Engineering from CIT.