Forensic File-Deletion Tracing Beyond Windows Logs: startup idea with real demand
PDFs vanish from a network share and the audit log only shows the same user and laptop with 'PID 4 (System)'. Standard logs can't explain what happened.
r/sysadmin · Sep 14, 2026 – Oct 14, 2026 · 47 upvotes
PDFs exported from Excel to a network drive share…
Read the thread · 45 comments
Forensic File-Deletion Tracing Beyond Windows Logs is a startup idea for sysadmins. PDFs vanish from a network share and the audit log only shows the same user and laptop with 'PID 4 (System)'. Standard logs can't explain what happened. A thread in r/sysadmin drew 47 upvotes and 45 comments between Sep 14, 2026 – Oct 14, 2026. People get by with Windows Event Viewer, Netwrix, and Varonis, and that still leaves this job open. Hotness is 2.90, Simmering. Real but moderate pain. Some willingness to pay. The thread drew 47 upvotes and 45 comments. Gaps in existing tools. Needs integrations or data deals. A first version is a hard build, about 5+ weeks, priced between $50 and $199 a month and charged as a B2B subscription. The pain, the source, the alternatives, the scope notes, and the questions on this page are free to read and free to build from. The agent starter prompt is the paid part. The first slice is on the page. One credit unlocks the rest, to paste into a coding agent, download as Markdown, or send as a private link.
Verbatim quotes are added only after a manual check. Until then, the thread title is the excerpt. Exact post date and verbatim quotes pending enrichment.
Who has it
Sysadmins.
What people use now
- Windows Event Viewer
- Netwrix
- Varonis
A way through
A deep file-event forensics tool that enriches Windows logs with context (cloud sync, antivirus, scripts) to explain 'system' deletions.
MVP scope
- Give sysadmins a way to do this in one sitting: Explain 'PID 4 System' deletions by correlating cloud sync, antivirus and scripts with audit events.
- Persist the result and show it again after a reload.
- State the empty case when there is nothing to show yet, with one next step.
- Charge later with a B2B subscription, between $50 and $199 a month. The free path must finish the core job once.
- Ship the desktop app only. Leave Windows Event Viewer to keep the jobs they already do well.
How it could charge
B2B SaaS · $50–199 a month · B2B · GLOBAL.
Hotness 2.90
3 of 5, Simmering. Real but moderate pain. Some willingness to pay. The thread drew 47 upvotes and 45 comments. Gaps in existing tools. Needs integrations or data deals.
Why this score
| Pain | 3 / 5 |
| Willingness to pay | 3 / 5 |
| Demand | 2 / 5 |
| Competition gap | 3 / 5 |
| Ease of build | 2 / 5 |
| Recency | 5 / 5 |
Weights: pain 25%, willingness to pay 20%, demand 20%, gap 15%, ease 10%, recency 10%. Recency is recomputed every build. The source report’s 1–10 score is not shown.
Questions
Is this idea already taken?
People already use Windows Event Viewer, Netwrix, Varonis. Those options do not do the job in the solution above. The idea is free to build. Nothing here is an exclusive claim.
How hard is a first version?
Hard. A tight MVP is about 6 weeks (5+ weeks), assuming the regulated or partner-gated parts are stubbed. The paid prompt turns that into tasks.
Who would pay, and how?
The audience is sysadmins. Charge a B2B subscription, and test a price between $50 and $199 a month. Willingness to pay is one input to Hotness, not a promise that someone will buy.
Can I use the evidence?
Yes. Build the product. The thread title is a short excerpt with a link, not a quote we are putting in someone's mouth. Exact post dates and verbatim lines are added only after a manual check. Ideas are suggestions, not medical, legal, or financial advice.
Agent prompt
The first slice is public. The rest is fetched only after you unlock it, and it is not in this page’s HTML.
# Agent starter prompt: Forensic File-Deletion Tracing Beyond Windows Logs You are a senior product engineer. Build only the product described in this document. If a detail is missing, choose the smallest option and write it down in the README. Do not invent a second product, a marketplace of marketplaces, or a growth hack. ## Product Name: Forensic File-Deletion Tracing Beyond Windows Logs One line: Explain 'PID 4 System' deletions by correlating cloud sync, antivirus and scripts with audit events. Shape: Desktop app AI stance: AI-assisted Region for v1: Global Hotness (context only, not a requirement): 2.90 (simmering). Real but moderate pain; some willingness to pay; thread engagement 47▲/45💬 (demand 2/5); gaps in existing tools; needs integrations or data deals. ## Problem PDFs vanish from a network share and the audit log only shows the same user and laptop with 'PID 4 (System)'. Standard logs can't explain what happened. Who feels it: Sysadmins.
Unlock the rest with 1 credit.
The sister site has the plan and the first month of distribution, with no account. Plan and growth prompts, free
Related
SSH and SSL Certificate Lifecycle Manager for Small IT
Auto-rotation and one dashboard for certs and keys across mixed Linux and Windows fleets.
Instant Account Lockdown Kit for Small Teams
One click to kill sessions, reset passwords, revoke tokens and notify the manager when someone is let go.
Ghost Contact Cleaner for Microsoft 365
Detect and safely remove AI-generated phantom contacts that pollute Exchange autocomplete.