Amsal Tampubolon, Michael Ginting, and Eunike Charina I. Tarigan. 2026. “Implementation of the Discrete Cosine Transform (DCT) Steganography Method for Embedding Secret Messages in Image Media”. BIOS: Jurnal Informatika Dan Sains 4 (01):1-10. https://seaninstitute.or.id/bersinar/index.php/bios/article/view/249.