Ramón Cáceres is a Lead Member of Technical Staff at AT&T Labs - Research. His research interests include mobile and ubiquitous computing, human mobility, virtualization, security, and privacy. He has previously been a Research Staff Member at IBM Research and Chief Scientist of Vindigo, an award-winning provider of location-based services for mobile devices. He holds a Ph.D. from the University of California at Berkeley. He is an IEEE Fellow and an ACM Distinguished Scientist.