Security and Trust Management

This book constitutes the refereed proceedings of the 20th International Workshop on Security and Trust Management (ERCIM STM 2024), held in Bydgoszcz, Poland, during September 1920, 2024 and co-located with ESORICS 2024 conference. The 6 full papers and 4 short papers presented in this volume were carefully reviewed and selected from 22 submissions. They were organized in topical sections as follows: Trust, Anonymity and Identity; Cryptography, Secure Computation and Formal Methods; Operating Systems and Application Security.