Steganography

Steganography is like a secret code. It is a way to hide messages inside other things like pictures, videos, or audio. To do this you take extra pieces of information, called "bits", and put them into parts of the picture, video, or audio that you can't see or hear. This way, someone trying to read the message will not be able to find it. To read the message, you need a special code that only the sender and receiver know.