This is a bit of a silly question that I just need confirmation with.
When retrieving exif information, such as the camera model, software history....etc.....does the exifttool just pull that information from the hex information stored in the image? Essentially, I want to see if an image was opened in another software. However, someone could easily remove that exif information showing it was opened in another software. In order for someone to remove that exif information would they have to remove the hex information showing the software used, or can they just alter the exif information independently of the hex information?