Network Security.- 1 Forwarding Accountability: A Challenging Necessity of the Future Data Plane.- A Metric for Adaptive Routing on Trustworthy Paths.- Intrusion Detection.- Early Warning Systems for Cyber Defence.- Catching Inside Attackers: Balancing Forensic Detectability and Privacy of Employees.- Intrusion Detection in the Smart Grid based on an analogue technique.- Anonymous Communication.- On Building Onion Routing into Future Internet Architectures.- Anonymity Online for Everyone: What is missing for zero-effort privacy on the Internet.- Cryptography.- Reviving the Idea of Incremental Cryptography for the Zettabyte era Use case: Incremental Hash Functions Based on SHA-3.- The Quest for Scalable Blockchain Fabric: Proof-of-Work vs. BFT Replication.