ShareFacebookTwitterLinkedinEmail 2021 Journal Issues December 14, 2021 Regular Papers Volume 109, Issue 12 December 2021 Access the Full Issue Regular Papers Scanning the Issue Building In-the-Cloud Network Functions: Security and Privacy Challenges By P. Jiang et al. The article surveys the state-of-the-art literature on network function outsourcing, with a special focus on privacy and security issues. Extraction and Utilization of Excitation Information of Speech: A Review By S. R. Kadiri, P. Alku, and B. Yegnanarayana This article reviews signal processing approachesused for extraction of excitation information from speech. Point of View Do Dense 5G Networks Increase Exposure to Electromagnetic Fields? By L. Chiaraviglio et al. Scanning Our Past Swedish Cryptology II By K.-O. Widman and A. Wik Access the Full Issue