Andrew W. Appel is the Eugene Higgins Professor and Chairman of the Department of Computer Science at Princeton University, New Jersey, where he has been on the faculty since 1986. His research is in software verification, computer security, programming languages and compilers, automated theorem proving, and technology policy. He is known for his work on Standard ML of New Jersey and on Foundational Proof-Carrying Code. He is a Fellow of the Association for Computing Machinery, recipient of the ACM SIGPLAN Distinguished Service Award, and has served as Editor in Chief of ACM Transactions on Programming Languages and Systems. His previous books include Compiling with Continuations (1992), the Modern Compiler Implementation series (1998 and 2002) and Alan Turing's Systems of Logic (2012).