An Ontology-based Approach for Setting Security Policies in Smart Homes.- Clap Auth: A Gesture-based User-Friendly Authentication Scheme to Access a Secure Infrastructure.- User Authentication on Headset-like Devices By Bio-Acoustic Signals.-The measurable Environment as Nonintrusive Authentication Factor On the Example of WiFi Beacon Frames.- Protecting FIDO Extensions against Man-in-the-Middle Attacks.- Authentication, Authorization and Selective Disclosure for IoT Data Sharing using Verifiable Credentials and Zero-Knowledge Proofs.- Privacy-Preserving Speaker Verification and Speech Recognition.- An E-Voting System Based on Tornado Cash.- Linking Contexts from Distinct Data Sources in Zero Trust Federation.