Benefits of Using Steganalysis Techniques in Forensic Response

D.

Steganalysis is the process of detecting the presence of hidden messages or data within digital media such as images, audio, and video files. It involves analyzing the content of the media to detect any modifications or additions that may have been made to it.

Out of the given options, the benefit of using steganalysis techniques in forensic response is best described by option D: Identifying least significant bit encoding of data in a .wav file.

The least significant bit (LSB) is the bit position in a binary number that represents the smallest value. LSB encoding involves hiding information by modifying the least significant bits of the pixel or audio sample values. This technique is often used for covert communication or to hide information within seemingly innocuous files.

By using steganalysis techniques to identify LSB encoding, forensic investigators can identify the presence of hidden data within files. This can be useful in identifying data exfiltration or data theft attempts, as well as identifying individuals who may be attempting to hide data on a system.

Options A and B are incorrect as they do not relate to steganalysis techniques. Breaking a symmetric cipher used in secure voice communications is a cryptographic technique, and determining the frequency of unique attacks against DRM-protected media is more related to digital rights management (DRM) than steganalysis.

Option C is a benefit of any forensic investigation, not just steganalysis. Maintaining chain of custody for acquired evidence is essential to ensure the integrity of the evidence and its admissibility in court.