(Digital Forensics in the Criminal Justice System)
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While the two most popular tools are Guidance Software’s EnCase and AccessData’s FTK, there are other tools that are available and should be part of your toolbox. Once you have properly identified and collected digital evidence, the next step is to analyze it. It does not really matter if you are performing analysis as part of a criminal investigation or as part of a corporate investigation; you should always follow the same protocols.
An emphasis in this course is on helping you understand why using an analysis protocol is important. It goes back to our discussion in week one regarding best practices and industry standards. Remember, you should NEVER, EVER work on original evidence if it can be avoided by any means; instead, use a forensic image. When you work on the image, you pick the tools you will use. Again, it does not matter which tool you actually use, as long as the tool is accepted by the forensic community, and you are able to testify to the tool’s validity as well as the process you used in your examination.
During your analysis, you should document every step you take and all of your findings. Some tools have a report function that works well to capture both the identified data and the date/time of your various analyses. However, this should always be supplemented with your own notes and documentation.
For this week’s discussion, complete the following questions below in detail. Please discuss thoroughly and substantively in your post. Additionally, respond in a thorough, substantive, intelligent way to at least one of your fellow classmates that adds to our discussion and learning of this week’s topic!
1) Discuss in detail why you need to use a write blocker (either hardware or software) in your examinations, whether for a criminal case or a corporate case.
2) Imagine you are a computer forensic examiner receiving a suspect hard disk drive from a detective in your department. The drive was seized properly during a legally executed search warrant. The detective signs the chain of custody log and hands you the drive. Your job is to accept the drive, conduct an analysis, and maintain the drive until trial. Please explain the steps you would take, from receipt of the evidence until testimony, including the reasons why you would take each step. For example, what would you check for when you sign for the drive on the chain of custody document?