The act of hiding data within another medium is called:

A.
Steganography

B.
Transposition

C.
Substitution

D.
Permutation

Explanation:
Steganography involves secretly placing a piece of data within another
medium. The data could be in a wav file, a graphic, or bits that are altered within
a document. It involves hiding the existence of the message, not actually encrypting
the message.