Steganography
Steganography is a way to hide information. It is often used in the field of computer science. The goal is to conceal a message in something else so that it is not easily detected.
For example, imagine you want to send a secret message to someone. Instead of simply typing the message and sending it in an email, you might use steganography to hide the message inside of a picture or a video. This way, the receiver of the picture or video would have to know that there is a message hidden inside and how to extract it in order to read the secret message.
There are many different ways to use steganography, and it can be a very useful tool for keeping information secret. However, it is important to remember that if someone knows to look for hidden messages, they may still be able to find them.