Kamarudin, N. K., Bismi, N. S., Ahmad Zukri, N. H., Mohd Fuzi, M. F., & Ramle, R. (2020). Network Security Performance Analysis of Mobile Voice Over Ip Application (mVoIP): Kakao Talk, WhatsApp, Telegram and Facebook Messenger. Journal of Computing Research and Innovation, 5(2), 21–27. https://doi.org/10.24191/jcrinn.v5i2.136