Steganography  is an art of hiding the information within the files sensitive message and information are hided into the multimedia files without being detected by the process of steganography . It allows anonymous and secure interchange of the information without being detected easily. The hidden information is not visible with naked eyes and hence the chance of being detected just by seeing the files containing the hidden information is near to impossible . Steganography can be done with media , files and folders
Steganography is sometimes used as an authentication watermark by the  digital music and movie companies which in invisible to the users but it useful to keep the authenticity .Steganography is also used by the terrorist organizations use this technique to carry out their information exchange . Steganography is also popular from the forensics point of view and is widely covered under cyber forensics.

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