Stenography - Hide in Images
Ever want to know how pass around secret messages? In this tutorial, you’ll learn how to hide encrypted text inside of images so that not only would the recipient have to know it’s inside the image, but also know the password to be able to make any use of it.
ImageHide
ImageHide is a simple image utility that allows you to hide and encrypt text inside of an image. There is not much more to it than that. The only way to get the secret message back out of the image is to know: 1) what image file the text is hidden in and 2) what the password is. Check out the video below to see it in use!
Note: ImageHide only works for Windows.
There are Mac and Linux variants our there.