This book constitutes revised selected papers from the thoroughly refereed conference proceedings of the 16th International Conference on Innovative Security Solutions for Information Technology and Communications, SecITC 2023, held in Bucharest, Romania, in November 2023.

BASS: Boolean Automorphisms Signature Scheme.- Shpilrain Using Page Offsets for Detecting Control-Flow Anomalies.- Elementary Remarks on Some Quadratic Based Identity Based Encryption Schemes.- SDVS Sender-Privacy in the Multi-Party Setting.- Software Mitigation of RISC-V Spectre Attacks.- A Modern Malware-oriented Dynamic Information Retrieval Tool.- M-Sel: A Message Selection Functional Encryption from Simple Tools.- Deniable Public-Key Authenticated Quantum Key Exchange.- Towards a secure and transparent blockchain-based system for e-commerce deliveries.- Attacking Secure-Element-Hardened MCUboot Using a Low-Cost Fault InjectionToolkit.- OpenBSD formal driver verification with SeL4.- An Efficient Small Modulus Test and Its Applications to Delegated Computation without Preprocessing.- Learning Homomorphisms with Rounding and Pseudorandom Function.- Some Results on Related Key-IV Pairs of Espresso.