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ExamsGCIHQuestions#286
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GCIH · Question #286

GCIH Question #286: Real Exam Question with Answer & Explanation

The correct answer is D: Active Attacks. Victor is performing Active Attacks against the steganographic image. Active Attacks in steganography involve deliberately manipulating or transforming the stego image to detect, disrupt, or destroy hidden data. The techniques described - smoothening, contrast reduction, pixel av

Malware Analysis & Advanced Persistent Threats

Question

Victor works as a professional Ethical Hacker for SecureEnet Inc. He has been assigned a job to test an image, in which some secret information is hidden, using Steganography. Victor performs the following techniques to accomplish the task: 1. Smoothening and decreasing contrast by averaging the pixels of the area where significant color transitions occurs. 2. Reducing noise by adjusting color and averaging pixel value. 3. Sharpening, Rotating, Resampling, and Softening the image. Which of the following Steganography attacks is Victor using?

Options

  • AStegdetect Attack
  • BChosen-Stego Attack
  • CSteg-Only Attack
  • DActive Attacks

Explanation

Victor is performing Active Attacks against the steganographic image. Active Attacks in steganography involve deliberately manipulating or transforming the stego image to detect, disrupt, or destroy hidden data. The techniques described - smoothening, contrast reduction, pixel averaging, noise reduction, sharpening, rotating, resampling, and softening - are all image manipulation operations applied to the carrier image. These transformations attempt to remove or corrupt the embedded secret data without necessarily knowing the steganography algorithm used. The other options are different attack categories: Steg-Only Attack means the attacker only possesses the stego object; Chosen-Stego Attack means the attacker can choose which stego objects are generated; and Stegdetect is a specific automated detection tool, not an attack category involving image manipulation.

Topics

#steganography#active attacks#steganalysis#image manipulation

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