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This book constitutes the proceedings of the 4th International Conference on Human Aspects of Information Security, Privacy, and Trust, HAS 2016, held as part of the 18th International Conference on Human-Computer Interaction, HCII 2016, held in Toronto, ON, Canada, in July 2016 and received a total of 4354 submissions, of which 1287 papers were accepted for publication after a careful reviewing process. These papers address the latest research and development efforts and highlight the human aspects of design and use of computing systems. The papers thoroughly cover the entire field of Human-Computer Interaction, addressing major advances in knowledge and effective use of computers in a variety of application areas.

The 25 papers presented in the HAS 2016 proceedings are organized in topical sections as follows: human factors of authentication; security, privacy, and human behavior; and security technologies.

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User Identification Using Games.- Hermes: Hands-Free Authentication in Physical Spaces.- Implicit Authentication for Mobile Devices Using Typing Behavior.- Fraud Protection for Online Banking - A User-Centered Approach on Detecting Typical Double-Dealings due to Social Engineering and Inobservance whilst Operating with Personal Login Credentials.- Vibration Based Tangible Tokens for Intuitive Pairing among Smart Devices.- Anonymous Authentication with a Bi-directional Identity Federation in the Cloud.- An Integration of Usable Security and User Authentication into the ISO 9241-210 and ISO/IEC 25010:2011.- Secure Communication Protocol between a Human and a Bank Server for Preventing Man-in-the-Browser Attacks.- Proposed Privacy Patterns for Privacy Preserving Healthcare Systems in Accord with Nova Scotia´s Personal Health Information Act.- Information Security Application Design: Understanding Your Users.- Responsibility Modelling and Its Application Trust Management.- Security by Compliance? A Study of Insider Threat Implications for Nigerian Banks.- Current Trend of End-users´ Behaviors towards Security Mechanisms.- Share to Protect - Quantitative Study on Privacy Issues in V2X-Technology.- The Impact of Security Cues on User Perceived Security in E-Commerce.- Mass Surveillance in Cyberspace and the Lost Art of Keeping a Secret: Policy Lessons for Government after the Snowden Leaks.- Optional Data Disclosure and the Online Privacy Paradox: A UK Perspective.- Assessing the Feasibility of Adaptive Security Models for the Internet of Things.- OpenStack Firewall as a Service Rule Analyser.- Interactive Discovery and Retrieval of Web Resources Containing Home Made Explosive Recipes.- Attack Tree Analysis for Insider Threats on the IoT Using Isabelle.- The State of Near-Field Communication (NFC) on the Android platform.- Towards a Usable Framework for Modelling Security and Privacy Risks in the Smart Home.- A Taxonomy to Classify Risk End-user Profile in Interaction with the Computing Environment.- Security Middleware Programming Using P4.

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