All files (yes, all of them) contain hidden information that you are probably not aware about. These information can not be seen when opening the file. Some of them are already revealed when you right-click on a file, yet they are by far not complete.

However, with the right tools, these information are available for anyone to see. This thought might range from indifferent to scary to you. Especially those that are anxious about what information they send together with their images, videos, documents and more, should thus check their files before uploading and sending them over the web.… Read the rest