Computer Hacking Forensic Investigator (CHFI v10) — Question 427

An organization suspects that a former temporary employee may have used steganography to hide sensitive information within multimedia files for unauthorized extraction. The company has launched an internal steganalysis process to uncover the potential breach. The steganalyst discovered some unusual patterns within a specific image file as part of the investigation. Which steganalysis attack techniques are most likely being applied in this scenario?

Answer options

• A. Known-message Attack
• B. Known-stego Attack
• C. Stego-only Attack
• D. Chosen-message Attack

Correct answer: C

Explanation

The correct answer is C, Stego-only Attack, since this technique focuses on analyzing the media file without any knowledge of the original message. The other options involve prior knowledge of either the message (A and D) or the stego medium (B), which is not applicable in this scenario as the investigation is centered on detecting hidden data without such information.