| Course | AC468 Digital Forensics and Investigative Techniques |
|---|---|
| Unit | Unit 8 |
| Paper type | Seminar reflection |
| Length | About 820 words, 5 pages double-spaced |
| Format | APA 7 student paper |
| School | Purdue University Global |
| Program | BS in Accounting |
| Updated | October 2026 |
Free sample paper for AC468 Unit 8
The Hash Matched, So I Stopped Asking: A Unit 8 Seminar Reflection on the Days Before Imaging
[Student Name]
Purdue University Global
AC468: Digital Forensics and Investigative Techniques
Unit 8 Seminar Reflection
[Instructor Name]
[Date]
The logistics firm, the administrator, the classmate and Belmonte Fine Foods are composite; the articles and guide cited are real.
The Case and My First Position
The facilitator's case was short. A controller at a regional logistics firm resigned on a Friday. The firm suspected she had taken a customer pricing spreadsheet to a competitor, and an examiner found that her account had opened that spreadsheet at 22:40 the night before she resigned. The finding looked strong until the firm's IT administrator testified that he had logged into the laptop on the Monday after she left, using her account with a reset password, to look for the same spreadsheet. He had opened several files. He kept no record of which ones or when, and the laptop was imaged on Wednesday.
My session note, written before the discussion started, read: "The image hash matched at acquisition and verification, so the evidence is sound." I believed that the hash had answered the integrity question completely. In my Unit 2 record I had written that matching values "prove each copy matches its source," and I still think that sentence is true.
The Point That Changed My View
A classmate, Priya, answered my note directly. Her words, as I wrote them down: a hash tells you the copy and the disk were identical when you made the copy, and it is silent about everything that happened to the disk before you arrived. The administrator's Monday login happened before imaging, so every artifact it created was faithfully preserved by the image, along with every artifact the controller created. The hash protected both equally.
I tried to answer her by pointing to timestamps: the controller's access was on Thursday night, the administrator's on Monday, so the two should be separable. Priya asked which timestamps. Opening a file can update its access time, write a new jump list entry and refresh a shortcut file, and a reset password means the administrator's session ran under the controller's account name. Without his notes, a court would have to choose between his memory and the examiner's reading of artifacts he may have overwritten. The hash cannot help with that choice.
I had treated integrity as one question when it is two: whether the copy matches the source, which a hash answers, and whether the source was undisturbed before it was copied, which only a written record of everyone who touched it can answer.
Turning the Lesson on My Own Work
My Unit 2 record for Belmonte Fine Foods relied on one custody form. The IT manager signed it on April 3, stating that he collected the accounts payable lead's laptop powered off and kept it in a locked cabinet until I imaged it on April 6. I recorded that as his account, which was right, but I did nothing to test it.
Two days later I reopened the laptop image. The Windows Security event log records every interactive logon with its account and time (Kent et al., 2006). I searched it for logons between April 3 at 16:20 local time and April 6. There were none, and the last shutdown event was April 3 at 15:57, before he signed the form. The record now carries a short addendum stating what was checked, the log path and the result. The custody form is no longer the only support for those three days.
Why the Seminar Case Felt Different From Mine
At first I thought the logistics case was an extreme one, a careless administrator who should have known better. Thinking about it longer, I am less sure. He was trying to help. The firm wanted the spreadsheet found quickly, he had the access, and nobody had told him that looking was itself a change to the evidence. The IT manager at Belmonte was in the same position on April 3, and the only difference between the two cases is that he happened not to open the laptop. My acquisition record did not show that; it showed that he said so. Seeing how close the two cases were is what made the lesson stick, because it meant my own record had depended on luck that I had written up as procedure.
What I Will Do Differently
I will check the device's own logs for the period between seizure and imaging on every acquisition, not only when a gap is challenged. I will also stop writing that a hash makes evidence sound. It makes a copy faithful. Whether the original deserves trust is a separate question that research on digital evidence has long treated as the harder one (Casey, 2019), and one that the field's own review of its next decade named as a weakness of practice (Garfinkel, 2010).
References
Casey, E. (2019). Trust in digital evidence. Digital Investigation, 31, 200898. https://doi.org/10.1016/j.fsidi.2019.200898
Garfinkel, S. L. (2010). Digital forensics research: The next 10 years. Digital Investigation, 7, S64-S73. https://doi.org/10.1016/j.diin.2010.05.009
Kent, K., Chevalier, S., Grance, T., & Dang, H. (2006). Guide to integrating forensic techniques into incident response (NIST Special Publication 800-86). National Institute of Standards and Technology. https://doi.org/10.6028/NIST.SP.800-86
Reading the AC 468 Unit 8 instructions
In Unit 8 of AC468 you look back on one seminar discussion and explain how it altered what you believed. Summarize the case only as far as needed to follow your reasoning. Quote or paraphrase what you believed before the discussion, ideally from your own notes. Present the point from a classmate or facilitator that challenged that view, then your attempt to answer it and why the attempt did or did not hold. State your revised understanding in one clear sentence. Carry the lesson back to something you submitted earlier in the term and report what you rechecked or revised. End with specific changes to your future practice. Use the first person throughout, and be candid about where your earlier thinking failed. Cite research on digital evidence and a forensic guide in APA 7.
How this AC468 Unit 8 example is built
The sample summarizes the logistics case in one paragraph: a resignation, a spreadsheet opened the night before, and an administrator's undocumented Monday login. It quotes the writer's note that the matching hash made the evidence sound. Priya's point follows in her own words, then the writer's attempt to separate the logins by timestamps and why it fails. The highlighted sentence splits integrity into two questions. A section on why the case felt close to the writer's own reaches the Belmonte acquisition, where the custody form was the only support for three days. The writer searches the Security event log, finds no logons and a shutdown before the form was signed, and adds an addendum. Two practice changes close the reflection, citing Casey and Garfinkel.
Where the points sit in the AC468 Unit 8 rubric
Reflections in AC468 are graded on evidence of changed thinking, not on summary. Points go to a clear statement of the prior view, an honest account of the challenge to it and a precise revised understanding. Graders reward reflections that test the lesson on the student's own course work and report something concrete that was checked or changed. Vague endings such as a promise to be more careful score lower than named practices. The case summary should be brief and accurate. First-person voice is expected, and the reflection should show reasoning rather than agreement for its own sake. APA 7 citations connect the lesson to the literature on digital evidence.
AC468 Unit 8 help from the desk
Weak Unit 8 reflections retell the seminar case at length and add one paragraph of reaction at the end. The writer's earlier view is never stated, so no change can be shown. The classmate's point is mentioned but not engaged, with no attempt to answer it. Lessons stay abstract and never reach the writer's own prior work. Changes to practice are general wishes rather than specific steps. Some reflections turn into criticism of the people in the case instead of examining the writer's thinking. Where your seminar used another case, a writer can shape the reflection from your notes, the view you held and the work you would revisit.
Get an AC468 Unit 8 example written to your instructions
Nothing substitutes for the session itself in Unit 8. The case used in the seminar, your starting position, the remark that shifted it and the rubric give the reflection its substance; the written assignment offered in place of attendance serves if the live meeting was missed. Spaces are left for your own recollections. A first custom reflection costs nothing and comes back in 24-48h. The paper above is an original model document written by our desk, not a submitted student paper and not an official Purdue University Global document.
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AC468 Unit 8 questions, answered
Why doesn't a matching hash settle the question?
Because it answers a different question. A hash computed at imaging and matched later proves the image has not changed since it was made. Whatever happened to the drive before imaging, such as an administrator opening files, is outside what the hash can describe. Only documentation of the device's handling before acquisition can cover that period.
Is the reflection critical of the administrator?
Not personally. His login was an ordinary IT response to a request, and nothing suggests he acted in bad faith. The reflection's point is that the absence of a record made his actions indistinguishable from the controller's in the artifacts, which is a lesson about documentation practice rather than about any individual.
What if my seminar discussed a different case?
The same structure applies to any case in which a finding failed on procedure. Send the case or your notes, the prompt and the rubric. The reflection is built around your session: the view you held, the point that changed it and how the lesson applies to your own earlier work, with space marked for details only you remember.
Where can I find a free AC468 Unit 8 sample paper?
This page holds a full AC468 Unit 8 seminar reflection on an undocumented login before imaging, with the writer's first view, a classmate's challenge, a check of the Belmonte Fine Foods acquisition and APA 7 references.
What did the writer check on the Belmonte laptop?
The Windows Security event log on the image, for interactive logons between the April 3 collection and April 6 imaging. There were none, and the last shutdown came before the custody form was signed, so the record gained an addendum.