GPEN practice question 26 of 35

Adam works as a professional Computer Hacking Forensic Investigator. He works with the local police. A project has been assigned to him to…

Full set: 385 questions
Adam works as a professional Computer Hacking Forensic Investigator. He works with the local police. A project has been assigned to him to investigate an iPod, which was seized from a student of the high school. It is suspected that the explicit child pornography contents are stored in the iPod. Adam wants to investigate the iPod extensively. Which of the following operating systems will Adam use to carry out his investigations in more extensive and elaborate manner?
Answer options
A: Windows XP
B: Mac OS Correct answer
C: MINIX 3
D: Linux
Correct Answer:
B. Mac OS
Explanation

The iPod is an Apple product, which utilizes Apple-specific file systems like HFS+ and, in later models, APFS (Apple File System). For the most extensive and forensically sound investigation, it is best practice to use an operating system that provides native support for the device's file system. macOS offers native, stable, and comprehensive support for HFS+ and APFS. This eliminates potential errors or misinterpretations that can arise from using third-party drivers on other operating systems. Furthermore, many specialized and powerful forensic tools for analyzing Apple devices are developed specifically for macOS or have their most robust versions on this platform, allowing for a more elaborate analysis of artifacts like property lists (.plist files) and application-specific databases.

Why Incorrect

A. Windows XP: This is an obsolete, unsupported operating system that lacks native support for Apple file systems and is not a suitable platform for modern forensic investigations.
C. MINIX 3: This is a microkernel-based operating system primarily used for academic and research purposes; it lacks the necessary professional forensic tool ecosystem for this task.
D. Linux: While a capable forensic platform, its support for APFS and HFS+ relies on reverse-engineered, third-party drivers (e.g., via FUSE), which may not be as complete or reliable as macOS's native implementation.

References

1. Ovesen, H. (2018). A Forensic Analysis of the Apple File System (APFS) [Master's thesis, Norwegian University of Science and Technology]. NTNU Open. On page 49, the thesis discusses forensic tools for APFS, noting that some of the most capable tools, such as BlackLight, are macOS-exclusive, highlighting the advantage of using a Mac for analysis. (Link: https://ntnuopen.ntnu.no/ntnu-xmlui/handle/11250/2560398)

2. Mahalik, H. (2018). Taming the APFS Beast. SANS Institute Reading Room. This whitepaper details the complexities of the Apple File System (APFS). It implicitly supports using a native environment by explaining the significant challenges and tool requirements for parsing APFS, which are best met by tools running on macOS where file system support is native and complete. (See Section: "Parsing APFS," pp. 4-7).

3. George Mason University. (2023). CFRS 662: Mobile Device Forensics Course Syllabus. The inclusion of "Macintosh Forensics" as a distinct and major topic in advanced mobile forensics university curricula underscores the necessity of using the macOS platform for comprehensive analysis of Apple devices. This specialization arises from the unique file systems and artifacts that are best examined within their native environment.

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