GIAC
GCIH · Question #128
GCIH Question #128: Real Exam Question with Answer & Explanation
The correct answer is A: Steganography. Steganography conceals a secret message inside an ordinary, non-secret medium so that the very existence of the hidden message is obscured, providing security through obscurity.
Malware Analysis & Advanced Persistent Threats
Question
to the CEO of the company. To secure these messages, she uses a technique of hiding a secret message within an ordinary message. The technique provides 'security through obscurity'. What technique is Maria using?
Options
- ASteganography
- BPublic-key cryptography
- CRSA algorithm
- DEncryption
Explanation
Steganography conceals a secret message inside an ordinary, non-secret medium so that the very existence of the hidden message is obscured, providing security through obscurity.
Common mistakes.
- B. Public-key cryptography uses a mathematically linked key pair to encrypt and decrypt data, which secures content but makes it obvious that an encrypted - and therefore secret - message exists.
- C. The RSA algorithm is a specific asymmetric encryption algorithm used for key exchange and digital signatures; it transforms data into ciphertext but does not hide the message within ordinary content.
- D. Encryption converts plaintext into an unreadable ciphertext to prevent unauthorized access, but it does not conceal the existence of the communication the way steganography does.
Concept tested. Steganography as security through obscurity technique
Reference. https://www.nist.gov/publications/guide-media-sanitization
Topics
#steganography#security through obscurity#data hiding#covert communication
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