Four is a deeply experienced Security leader with more than two decades working in the field. As an early member of Google’s Security team, Four contributed to the detection of and response to the historic “Operation Aurora'' event. Four was also a cofounder of the project now known as BeyondCorp, an instrumental part of the “Zero Trust” movement in the security community. Four held leadership roles at Facebook and at Uber as the Chief Information Security Officer (CISO). Four was also CISO at Amazon where he was responsible for security of Amazon's worldwide retail business. Currently he is the VP of Security for Google Deepmind where he is working to solve some of the fundamental challenges in Security and Privacy in the AI field. Along the way he has been a startup advisor, holding roles at both GV and Section32.
