Editing Secure communication (section)

=== Steganography ===
{{Main|Steganography}}
[[Steganography]] ("hidden writing") is the means by which data can be hidden within other more innocuous data. Thus a watermark proving ownership embedded in the data of a picture, in such a way it is hard to find or remove unless you know how to find it. Or, for communication, the hiding of important data (such as a telephone number) in apparently innocuous data (an MP3 music file). An advantage of steganography is [[plausible deniability]], that is, unless one can prove the data is there (which is usually not easy), it is deniable that the file contains any.