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This book constitutes the refereed proceedings of the 15th IFIP TC 6/TC 11 International Conference on Communications and Multimedia Security, CMS 2014, held in Aveiro, Portugal, in September 2014.
The 4 revised full papers presented together with 6 short papers, 3 extended abstracts describing the posters that were discussed at the conference, and 2 keynote talks were carefully reviewed and selected from 22 submissions. The papers are organized in topical sections on vulnerabilities and threats, identification and authentification, applied security.

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Malicious MPLS Policy Engine Reconnaissance.- USB Connection Vulnerabilities on Android Smartphones: Default and Vendors´ Customizations.- Free Typed Text Using Keystroke Dynamics for Continuous Authentication.- Secure Storage on Android with Context-Aware Access Control.- A Study on Advanced Persistent Threats.- Dynamic Parameter Reconnaissance for Stealthy DoS Attack within Cloud Systems.- Touchpad Input for Continuous Biometric Authentication.- A Federated Cloud Identity Broker-Model for Enhanced Privacy via Proxy Re-Encryption.- D-Shuffle for Prêt à Voter.- An Approach to Information Security Policy Modeling for Enterprise Networks.- Introduction to Attribute Based Searchable Encryption.- Risk Analysis of Physically Unclonable Functions.- Decentralized Bootstrap for Social Overlay Networks.- Enhancing Privacy with Quantum Networks.- The Fundamental Principle of Breach Prevention.

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