This book constitutes the thoroughly refereed post-proceedings of the 7th Symposium on Foundations and Practice of Security, FPS 2014, held in Montreal, QC, Canada, in November 2014. The 18 revised full papers presented together with 5 short papers and 2 position papers were carefully reviewed and selected from 48 submissions. The papers are organized in topical sections on privacy; software security and malware analysis; network security and protocols; access control models and policy analysis; protocol verification; and cryptographic technologies.