PLAS aims to provide a forum for exploring and evaluating ideas on the use of programming language and program analysis techniques to improve the security of software systems. Strongly encouraged are proposals of new, speculative ideas, evaluations of new or known techniques in practical settings, and discussions of emerging threats and important problems. We are especially interested in position papers that are radical, forward-looking, and likely to lead to lively and insightful discussions that will influence future research that lies at the intersection of programming languages and security.