What can be defined as secret communications where the very existence of the message is hidden?

A.
Clustering

B.
Steganography

C.
Cryptology

D.
Vernam cipher

Explanation:
Steganography is a method of hiding data in another media type so the very existence of the data is
concealed.
Only the sender and receiver are supposed to be able to see the message because it is secretly hidden in a
graphic, wave file, document, or other type of media. The message is not encrypted, just hidden. Encrypted
messages can draw attention because it tells the bad guy, “This is something sensitive.” A message hidden in a
picture of your grandmother would not attract this type of attention, even though the same secret message can
be embedded into this image. Steganography is a type of security through obscurity.
Incorrect Answers:
A: Clustering describes multiple instances of a component working together as a single unit. This is not what is
described in the question.
C: Cryptology is the study of cryptography and cryptanalysis. This is not what is described in the question.
D: Vernam cipher is another name for one-time pad because one-time pad was invented by Gilbert Vernam.
This is not what is described in the question.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, p. 774-775