Question

in steganalysis, cover-media is which of the following?
a. the content of a file used for a steganography message
b. the type of steganographic method used to conceal a message
c. the file a steganography tool used to host a hidden message, such as a jpeg or an mp3 file
d. a specific type of graphics file used only for hashing steganographic files

Explanation:

Cover-media in steganalysis refers to the ordinary file that is used to hide a secret steganographic message. It is a carrier file, like common media files such as JPEG images or MP3 audio files, that appears normal while hosting hidden content. Option a refers to the hidden message content, not the carrier. Option b describes a steganographic method, not the media. Option d incorrectly links it to hashing and a specific graphics-only use, which is not accurate.

Answer:

c. The file a steganography tool used to host a hidden message, such as a JPEG or an MP3 file