This two-volume set LNICST 254-255 constitutes the post-conference proceedings of the 14 International Conference on Security and Privacy in Communication Networks, SecureComm 2018, held in Singapore in August 2018. The 33 full and 18 short papers were carefully reviewed and selected from 108 submissions. The papers are organized in topical sections on IoT security, user and data privacy, mobile security, wireless security, software security, cloud security, social network and enterprise security, network security, applied cryptography, and web security.