Yesterday, a researcher disclosed a method of hiding up to three MB of data inside a Twitter image. In his demonstration, the researcher showed both MP3 audio files and ZIP archives contained ...

The first part of the file contains “meta information” (data that describes the content rather than the image content itself). For example, the second line below identifies the file as a png file.

While social media websites such Facebook and LinkedIn made it incredibly easy for a user to upload image files, the back-end implementation of such a feature has been anything but easy. Prior to the ...