This open access book constitutes the proceedings of the 7th International Conference on Principles of Security and Trust, POST 2018, which took place in Thessaloniki, Greece, in April 2018, held as part of the European Joint Conference on Theory and Practice of Software, ETAPS 2018.


The 13 papers presented in this volume were carefully reviewed and selected from 45 submissions. The papers are organized in topical sections named: information flow and non-intereference; leakage, information flow, and protocols; smart contracts and privacy; firewalls and attack-defense trees.

Information Flow and Non-Intereference.- What's the Over/Under? Probabilistic Bounds on Information Leakage.- Secure Information Release in Timed Automata.- Compositional Non-Interference for Concurrent Programs via Separation and Framing.- The Meaning of Memory Safety.- Leakage, Information Flow, and Protocols.- Formal Verification of Integrity Preserving Countermeasures Against Cache Storage.- Leakage and Protocol Composition in a Game-theoretic Perspective.- Equivalence Properties by Typing in Cryptographic Branching Protocols.- Design, Formal Specification and Analysis of Multi-Factor Authentication Solutions with a Single Sign-On Experience.- Smart Contracts and Privacy.- SoK: Unraveling Bitcoin Smart Contracts.- A Semantic Framework for the Security Analysis of Ethereum Smart Contracts.- Tool Demonstration: FSolidM for Designing Secure Ethereum Smart Contracts.- UniTraX: Protecting Data Privacy with Discoverable Biases.- Firewalls and Attack-Defense Trees.- Transcompiling Firewalls.- On Quantitative Analysis of Attack-Defense Trees with Repeated Labels.