From Dlux (UK) :
Image Processor was developed ultimately for use by Reporters, Journalists, and Government officials in other countries, for transporting top secret documents behind standard JPEG images, alleviating any fear of it falling into the wrong hands if it's stolen or lost. It incorporates a total of 3 encryption processes including password protection to the final JPEG, which can be viewed like any other picture. Image Processor then allows you to save this file to any media source for transport at a later date or e-mail the image straight away if you have broadband connection. Image Processor supports Transport Layer Security and will add an additional encryption when sending via this method or for even more security you can send the document by a new feature called SLINK. SLINK will establish a safe encrypted link between two PC's, and will send the encrypted file from one PC to another. The file being sent is re-encrypted with a different encryption file each time it's sent, making it practically impossible to decrypt. Default password is 'critter'.