Collin Mulliner, co-author of The Android Hacker's Handbook, is a security researcher and software engineer focusing on mitigations and countermeasures. He spends most of his time working on mobile devices and believes that in order to understand defense, you first have to understand offense. Collin received a Ph.D. from the Technische Universitaet Berlin in 2011, and master's and bachelor's degrees in computer science, respectively, from the University of California at Santa Barbara and Fachhochschule Darmstadt.