Steganography is used by hackers to hide overtly hide data. Hiding data overtly does not raise suspicion, because no one knows there is something hidden. A common example of steganography is hiding an image inside another image. Watermarking can also be considered steganography, if the watermark is not visible.
In this post, we'll cover two simple ways to extract Exif (Exchangeable image file) data from images. In short, Exif is information about a digital picture, such as:
- Date and time the picture was taken
- Type of camera used
- Types of settings on the camera
- GPS Coordinates where picture was taken