Clarence Chio has a B.S. and M.S. in Computer Science from Stanford, specializing in data mining and artificial intelligence. He has spoken on machine learning and/or security at DEF CON and 11 other infosec/software engineering conferences in 8 countries between 2015 and 2016. He had been a community speaker with Intel, and a security consultant for Oracle. Clarence currently works as a Security Research Engineer at Shape Security, building a product that protects high valued web assets from automated attacks. He is also the founder and organizer of the "Data Mining for Cyber Security" meetup group, the largest gathering of security data scientists in the San Francisco Bay Area.David Freeman is head of Anti-Abuse Relevance at LinkedIn, where he leads a team of machine learning engineers charged with detecting and preventing fraud and abuse across the LinkedIn site and ecosystem. He has a Ph.D. in mathematics from UC Berkeley and did postdoctoral research in cryptography and security at CWI and Stanford University.