Steganography: The Art and Science of Hiding Things in Other Things – Part 2

Executive summary: This tutorial demonstrates how to hide and retrieve textual data in BMP images using Python (Pillow and NumPy). It converts text to 7-bit binary, embeds each message bit into the three least-significant bits of R, G, and B (repeating each bit nine times for rudimentary error correction), and provides extraction code that uses majority voting to recover bits after compression. The author highlights the tradeoffs between capacity and image distortion and previews more efficient error-correcting approaches in a subsequent part.