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It is embedded in the data along with the rest of the message. A seed can be used to modify the behavior of the iterators.

Outguess uses generic iterators object to select which bits in the data should be modified. Before embedding data into an image, Outguess can determine the maximum message size that can be hidden while still being able to maintain statistics based on frequency counts. As a result, statistical tests based on frequency counts are unable to detect the presence of steganographic content.

Although the secrecy of the information is not degraded, its hidden nature is revealed, defeating the main purpose of Steganography.įor JPEG images, Outguess preserves statistics based on frequency counts. This allows an eavesdropper to detect media that has been modified, revealing that secret communication is taking place. Because of their invasive nature, steganography systems leave detectable traces within a medium's characteristics. Classical Steganography systems depend on keeping the encoding system secret, but modern steganography is detectable only if secret information is known, e.g. Steganography is the art and science of hiding that communication is happening. The user in the receiving end uses another piece of code to retrieve the data from the image. This protects the data from being invisible and hence be secure during transmission. The image if hacked or interpreted by a third party user will open up in any image previewer but not displaying the data.