What are the options available to the DEFR for acquiring potential digital evidence from CCTV systems?

Question

BlackTom AI · Accepted Answer

Reiterating the prompt, the question asks: What are the options available to the DEFR for acquiring potential digital evidence from CCTV systems?

Option provided: 'd. Write video files onto CD/DVD/Blu-ray disk or external storage medium, among others'. This suggests one possible acquisition path: extracting the video data from CCTV systems and saving it to physical media or external storage. In practice, creating a copy of video evidence onto portable storage is a common step in digital forensics to preserve the original evidence and enable analysis offline.

However, the accompanying answer_options list is empty, which means we do not have the other potential choices to compare against. Without the full set of options, we cannot definitively determine which ones are correct, partially correct, or incorrect. This limits our ability to evaluate each option against the others and identify all valid methods.

Despite that, we can discuss typical methods that are commonly considered for acquiring CCTV evidence, which may help contextualize option d:
- Physical extraction to external media: copying video files or disk images to USB drives, DVDs/Blu-ray, or other external storage, as suggested by option d. This preserves the original chain of custody while enabling rapid transport and analysis.
- Network-based or remote acquisition: retrieving data from networked CCTV systems via secure protocols, ensuring integrity through hashing and proper authorization.
- Live acquisition: capturing video streams in real time from NVRs/DVRs, which may involve consistent logging, time synchronization, and verification against sensor logs.
- Forensic imaging of devices: creating a bit-for-bit image of the camera recorder, NVR/DVR, or involved storage to ensure a complete, verifiable copy for examination.
- Metadata and log extraction: collecting not only the video files but also associated logs, access records, and configuration data that support timeline reconstruction and authenticity checks.

If you obtain the full list of options, you can assess each option by asking:
- Does it preserve the integrity and authenticity of the evidence (with proper hashing and chain of custody)?
- Does it minimize alteration to the original data? 
- Is it technically feasible with the involved CCTV system (DVR/NVR, camera types, storage, and network setup)?
- Does it align with standard forensic procedures or organizational policies?

In summary, option d presents a plausible method for acquiring CCTV evidence, but without the other options to compare, we cannot conclude which methods are officially considered valid for DEFR in this context. The absence of the full set of choices prevents a complete comparative evaluation and selection determination.

计算机犯罪与数字证据（202504-L州）

What are the options available to the DEFR for acquiring potential digital evidence from CCTV systems?

查看解析

登录即可查看完整答案

类似问题

Which of the following is a crucial step in the digital forensic investigation methodology?

A digital forensic investigator is examining a computer system suspected to contain evidence of unauthorized access. In this context, which principle is critical for the investigator to adhere to during the investigation?

What is a primary responsibility of a Digital Evidence First Responder (DEFR)?

How can the principle of reliability be ensured in digital evidence handling?

What is the correct procedure if a device at an incident site is found to be powered ON?

What is the purpose of auditing and justifying the procedures followed in digital evidence acquisition?

What should the DEFR do before disconnecting a networked device from the network?

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单