312-49v11 Exam Dumps - Computer Hacking Forensic Investigator (CHFIv11)

Option A is the most appropriate answer because CHFI v11 places strong emphasis on legal compliance, seeking consent, preserving evidence, chain of custody, and following a sound forensic process . In this scenario, the matter is administrative , the device owner is available , and investigators need access without altering data or resorting to more intrusive technical actions. Under those conditions, obtaining the employee’s voluntary cooperation and passcode disclosure is the most defensible and least disruptive method. The blueprint explicitly includes seeking consent , best practices for handling digital evidence , preserving evidence , and chain of custody under legal and procedural requirements.

This answer also aligns with CHFI’s mobile forensics areas covering mobile phone evidence analysis, data acquisition methods, logical and physical acquisition of Android devices, and challenges in mobile forensics . Investigators should first use the least destructive, most lawful, and most forensically sound approach before considering advanced acquisition techniques.

Option B is too intrusive for this fact pattern, C alters device state, and D escalates unnecessarily when consent-based access is already available.

According to the CHFI v11 Anti-Forensics Techniques domain, steganography is a sophisticated method used by attackers to conceal sensitive or malicious information within seemingly normal files such as images, audio files, video files, or documents. Unlike encryption, which makes data unreadable but visibly suspicious, steganography hides the existence of the data itself , making detection significantly more challenging during forensic analysis.

In steganography, data is embedded into unused or less noticeable parts of a file—such as the least significant bits (LSB) of image pixels or audio samples—without noticeably altering the file’s appearance or functionality. As a result, standard antivirus tools, intrusion detection systems, and basic forensic scans may not flag these files as suspicious. CHFI v11 highlights steganography as a common anti-forensic tactic used for covert data exfiltration, command-and-control communication, and storage of illegal or confidential information.

The other options are less effective in this scenario. File extension mismatch can often be detected through file signature analysis. Hiding data in file system structures leaves traces in metadata or unallocated space. Trial obfuscation is not a formally recognized anti-forensics technique in CHFI v11.

CHFI v11 emphasizes that detecting steganography often requires specialized steganalysis tools , statistical analysis, and anomaly detection techniques beyond conventional scanning.

Therefore, the technique used to hide sensitive information within normal-looking files—fully aligned with CHFI v11—is Steganography , making Option D the correct answer.