November 2019
Intermediate to advanced
346 pages
9h 36m
English
One of the main techniques in steganography is hiding messages in images by altering the least significant bits (LSB) of the pixels with those of the message bits. The result is an image with a message hidden in it that the human eye cannot distinguish from the original image. This is because, on changing the LSB in the pixels of an image, the pixel values are only altered by a small amount, resulting in a visually similar image.
There are two prominent methods for LSB: