Work spans mobile, social media, security, consumer Internet, anti-spam, networking, storage, e-commerce, data compression, multimedia, vision, machine learning, and operating systems. Former: Exec. VP and Gen. Mgr., Tech., Six Apart; CTO, Rojo Networks; Managing Dir., Radix Labs; CEO, CommerceFlow. Currently, Co-Founder and CTO, shopkick. Member: US Secret Service Electronic Crimes Task Force; US-DHS Infosec Tech. Transition Council. Research Fellow, Anti-Phishing Working Group; Tech. Advisor, Financial Services Tech. Consortium. Holder of over 70 patents. Has presented original research at numerous conferences and research colloquia.