Authentication and key agreement -- User Authentication Using Body Vibration Characteristics -- An Improved Authenticated Key Agreement Protocol for IoT and Cloud Server -- Efficient two-party authentication key agreement protocol using reconciliation mechanism from lattice -- Anonymous and Practical Multi-Factor Authentication for Mobile Devices Using Two-Server Architecture -- Data security -- Cross-chain Data Auditing for Medical IoT Data -- Outsourced Privacy-Preserving SVM Classifier Model over Encrypted Data in IoT -- A Scheme of Anti Gradient Leakage of Federated Learning Based on Blockchain -- Analysis of a New Improved AES S-box Structure Rong -- Network security -- Social Internet of Tings trust management based on implicit social relationship -- Romeo: SGX-based Software Anti-Piracy Framework -- P-TECS: An Energy Balance Algorithm for Opportunistic Networks Integrating Multiple Node Attributes -- Network Situation Awareness Model based on Incomplete Information Game.