Caleb serves as the Chair of CSA AI Security Initiative. Prior Caleb served as Chief Security Officer at Robinhood where he focused on keeping customers safe. Prior to Robinhood he was Security CTO at Databricks a leading data analytics and machine learning company where he built the security team from the ground up. Previously he was a Managing VP at CapitalOne, where he spearheaded many of their security initiatives. Prior to CapitalOne, Caleb was CEO of Armorize which was acquired by Proofpoint. He also founded SPI Dynamics and BlueBox security, which were acquired by HP and Lookout. He is attributed as one of the pioneers of application security and holds multiple patents in the space and is also the author of Web Hacking Exposed. He serves as an advisor, investor, and board member for security companies.