Caleb Sima is the Chief Security Officer at Robinhood, a stock brokerage platform for stocks, options, ETFs and cryptocurrencies with zero commission. Prior to Robinhood, Caleb was the Vice President of Information Security at Databricks, a leading data analytics and machine learning company. Previously, he was a Managing Vice President of Cybersecurity at CapitalOne, founded BlueBox Security (acquired by Lookout) andSPI Dynamics (acquired by HP), operated as CEO of Armorize (acquired by Proofpoint) and was a Chief Technologist of Application Security Center at Hewlett Packard.

Caleb has been engaged in the internet security arena for over 20 years and has become widely recognized as a leading expert in web security, penetration testing and the identification of emerging security threats. His pioneering efforts and expertise helped define the web application security industry and he holds multiple patents in the space. He serves as an advisor, investor and board member for several security companies.