Which of the following terms can be described as the process to conceal data into another file or media in a
practice known as security through obscurity?

A.
Steganography

B.
ADS – Alternate Data Streams

C.
Encryption

D.
NTFS ADS

Explanation:
Steganography allows you to hide data in another media type, concealing the very existence of the data.
Incorrect Answers:
B, D: Alternate data stream (ADS) is a feature of Windows New Technology File System (NTFS) that includes
metadata for locating a specific file by author or title.
C: Encryption is a method of transforming readable data into a form that appears to be random and unreadable.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, pp. 774
http://searchsecurity.techtarget.com/definition/alternate-data-stream