-- 5G and 6G Security. -- Fake Base Station Detection and Localization in 5G Network: A Proof of Concept. -- Formal Verification of 5GAKA-LCCO Protocol Supporting Forward Secrecy: Through Expanded BAN Logic. -- Computing Resource Allocation Based on Multi-base Station and Multi-user Scenario in Mobile Edge Computing. -- Cryptograhy. -- Lattice-based Multi-Entity Identification Protocols. -- Hardware Implementation of SM4 Encryption Algorithm with Hybrid Stochastic Computing. -- Privacy-preserving Fair Outsourcing Polynomial Computation without FHE and FPR. -- SFPDML: Securer and Faster Privacy-Preserving Distributed Machine Learning Based on MKTFHE. -- Existence of Equivalent Keys in a Random Number Generator with Field Trace and a Dynamic Mapping. -- A Heterogeneous Computing Framework for Accelerating Fully Homomorphic Encryption. -- Generic Construction of Forward-Secure Chameleon Hash Function. -- Exploring Leakage Characteristics and Attacks through Profiles of Screaming Channels. -- Revisiting and Extension of Kannan's Embedding for Ring-LWE. -- Revisiting the algorithm for the quaternion i-isogeny path problems. -- Machine Learning-based Security. -- The Impact of Data Scaling Approaches on Deep Learning, Random Forest, and Nearest Neighbor-based Network Intrusion Detection Systems for DoS Detection in IoT Networks. -- Integration Machine Learning Models into the Linux Kernel: Opportunities and Challenges. -- Early Weather Warning System with Real-time Monitoring by IoT Sensors considering Scalability and Reliability. -- Identification and Authentication. -- Privacy Preserving Multi Factor Authentication Protocol for Next Generation Grids Deployed in Smart Cities. -- Research Directions in Formatl Verification of Network Configurations Toward Verification of Mobile Network. -- Destructive Malwares on MITRE ATT&CK Tactics for Cyber Warfare: A Brief Survey and Analysis. -- Network Design and Security. -- Intelligent Cooperative Routing for Services in Computing Integration Networking. -- A Biometric-based Data Protection Scheme for Removable Storage Devices.

This book constitutes the refereed post-proceedings of the 7th International Conference on Mobile Internet Security, MobiSec 2023, held in Okinawa, Japan, in December 19-21, 2023. The 21 full papers presented were carefully reviewed and selected from 70 submissions. The papers are organized in the following topical sections: 5G and 6G security; cryptography; machine learning-based security; identification and authentication; network design and security.