Rick works as a Computer Forensic Investigator for BlueWells Inc. He has been informed that some confidential information is being leaked out by an employee of the company. Rick suspects that someone is sending the information through email. He checks the emails sent by some employees to other networks. Rick finds out that Sam, an employee of the Sales department, is continuously sending text files that contain special symbols, graphics, and signs. Rick suspects that Sam is using the Steganography technique to send data in a disguised form. Which of the following techniques is Sam using? Each correct answer represents a part of the solution. Choose all that apply.

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A. Text Semagrams Text semagrams hide secret information by substituting normal text with non-standard symbols, signs, or graphics that appear ordinary but encode a covert message, which directly matches Sam's behavior of embedding symbols and graphics in text files. B. Linguistic steganography Linguistic steganography is the broader classification encompassing all language-based methods of concealing information within text; because text semagrams are a recognized subtype of linguistic steganography, both A and B apply to Sam's technique.

Answer

C. Technical steganography Technical steganography relies on physical or chemical concealment methods such as invisible ink, microdots, or hidden compartments, and does not involve text-based symbol substitution.

Answer

D. Perceptual masking Perceptual masking is an audio steganography technique that conceals data within audio signals by exploiting thresholds of human hearing, making it entirely unrelated to text file manipulation.

Rick works as a Computer Forensic Investigator for BlueWells Inc. He has been informed that some confidential information is being leaked out by an employee of the company. Rick suspects that…

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