That is why, as a person who knows of photoshop and has used it, that those in the communications industry besides what you have posted, should have some reasonable guidlines about that software program and any other software that works on pictures, do’s and don’ts about its uses.
Canon sells, for their professional level cameras, an “original data security kit” which, among other things, protects the original data of the image from theft and shows when the original file has been altered in any way.