CompTIA Security+ Question H-46

Peter, a user, wants to protect sensitive information stored on his hard drive. He uses a program that encrypted the whole hard drive. Once the hard drive is fully encrypted, he uses the same program to create a hidden volume within the encrypted hard drive and stores the sensitive information within the hidden volume. This is an example of which of the following? (Select TWO).

A. Multi-pass encryption
B. Transport encryption
C. Plausible deniability
D. Steganography
E. Transitive encryption
F. Trust models

Answer: C,D

Steganography is the process of concealing a file, message, image, or video within another file, message, image, or video. In this case, it is a hidden volume within the encrypted hard drive. In cryptography, deniable encryption may be used to describe steganographic techniques, where the very existence of an encrypted file or message is deniable in the sense that an adversary cannot prove that an encrypted message exists. This then provides you with plausible deniability.