Steganalysis is the process of doing which of the following?

Steganalysis is the process of doing which of the following?

• A. The process of encrypting hidden content
• B. The process of analyzing a file for hidden content
• C. The process of compressing a file to reveal hidden content
• D. The process of deleting hidden messages

Answer: (B)

Steganalysis is the practice of analyzing a file to determine whether hidden information has been embedded within it. In steganography, someone hides a message inside another file (like an image, audio, or video) so it isn’t obvious. Steganalysis looks for signs that such hiding has occurred—patterns, statistical anomalies, or inconsistencies between the cover content and the data payload. It isn’t about encrypting content, which aims to make data unreadable without a key, nor is it about compressing a file to reveal hidden data or deleting hidden messages. For example, subtle, non-random changes in the least-significant bits of an image can indicate hidden data, and steganalysis focuses on detecting those signs rather than simply decursing or compressing the file. Therefore, the best description is the process of analyzing a file for hidden content.

Steganalysis is the practice of analyzing a file to determine whether hidden information has been embedded within it. In steganography, someone hides a message inside another file (like an image, audio, or video) so it isn’t obvious. Steganalysis looks for signs that such hiding has occurred—patterns, statistical anomalies, or inconsistencies between the cover content and the data payload. It isn’t about encrypting content, which aims to make data unreadable without a key, nor is it about compressing a file to reveal hidden data or deleting hidden messages. For example, subtle, non-random changes in the least-significant bits of an image can indicate hidden data, and steganalysis focuses on detecting those signs rather than simply decursing or compressing the file. Therefore, the best description is the process of analyzing a file for hidden content.