GIAC Certified Incident Handler (GCIH) — Question 180

Victor wants to send an encrypted message to his friend. He is using certain steganography technique to accomplish this task. He takes a cover object and changes it accordingly to hide information. This secret information is recovered only when the algorithm compares the changed cover with the original cover.
Which of the following Steganography methods is Victor using to accomplish the task?

Answer options

• A. The distortion technique
• B. The spread spectrum technique
• C. The substitution technique
• D. The cover generation technique

Correct answer: A

Explanation

The correct answer is A, the distortion technique, as it involves altering the cover object to embed information in such a way that it can only be extracted by comparing it with the original. The other options, such as the spread spectrum and substitution techniques, do not specifically describe the process of modifying a cover object for secret information recovery.