New Research Challenges for the Security of Ad Hoc and Sensor Networks -- Public Key Cryptography in Sensor Networks—Revisited -- Exploring Message Authentication in Sensor Networks -- Secure Initialization in Single-Hop Radio Networks -- Some Methods for Privacy in RFID Communication -- Ring Signature Schemes for General Ad-Hoc Access Structures -- Linking Ad Hoc Charging Schemes to AAAC Architectures -- Blind Spontaneous Anonymous Group Signatures for Ad Hoc Groups -- Security for Interactions in Pervasive Networks: Applicability of Recommendation Systems -- Pseudonym Generation Scheme for Ad-Hoc Group Communication Based on IDH -- Secure Overlay for Service Centric Wireless Sensor Networks -- IKE in Ad-Hoc IP Networking -- Advanced Detection of Selfish or Malicious Nodes in Ad Hoc Networks -- A Security Architecture for Mobile Wireless Sensor Networks -- Securely Propagating Authentication in an Ensemble of Personal Devices Using Single Sign-on -- Key Management in Wireless Sensor Networks -- SDD: Secure Directed Diffusion Protocol for Sensor Networks -- Secure AES Hardware Module for Resource Constrained Devices.