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Incident Response & Governance

Cybersecurity Incident Post-Mortem & RCA Generator

Turn security breaches and zero-day incidents into structured organizational learning. Document chronological timelines, calculate MTTC/MTTR operational response SLAs, apply the 5-Whys root cause methodology, and export auditor-compliant reports in Markdown and PDF formats.

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Incident Post-Mortem & Root Cause Analysis (RCA) Builder

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📝 1. Incident Metadata & Severity

Incident Response Milestones (For MTTC / MTTR Calculation)

Chronological Timeline Entries

10:14 UTCAutomated anomaly detected: suspicious outbound shell socket on edge gateway.
10:28 UTCIncident response bridge convened; host isolated via EDR containment.
11:45 UTCWebshell binary identified in temporary directory; sha256 hash extracted.
13:30 UTCEdge WAF virtual patch deployed; zero active outbound beacons confirmed.

5-Whys Root Cause Analysis

1. Why did the breach/incident occur?
2. Why was that condition possible?
3. Why was the exposure active?
4. Why did existing controls fail to prevent it?
5. Fundamental Root Cause:

Preventative Action Items

HighMigrate administrative portal behind Cloudflare Zero Trust tunnel(DevOps Lead)
HighConduct tenant-wide Kerberos KRBTGT double-reset(IAM Team)
MediumDeploy automated vulnerability SLA alerting script(SecOps Team)
Operational IR Scorecard
MTTC (Containment)

180m

⚠ Exceeded SLA target
MTTR (Resolution)

300m

Total recovery time
Incident Severity:Sev 1
Timeline Events Logged:4 milestones
Remediation Action Items:3 assigned

Generated Markdown Preview

# Incident Root Cause Analysis (RCA) & Post-Mortem

## Executive Summary
* **Incident Title:** Critical Perimeter Appliance RCE Incident
* **Severity Level:** Sev 1
* **Associated CVE / Vulnerability:** CVE-2024-3400
* **Incident Commander:** SecOps Incident Commander
* **Lead Investigator:** Lead Security Engineer
* **Impacted Systems & Workloads:** Edge VPN Gateway, DMZ Subnet, Active Directory
* **Date of Incident:** Oct 18, 2026

---

## Operational Incident Response Metrics
* **Time to Containment (MTTC):** 180 minutes (3.0 hours)
* **Time to Total Resolution (MTTR):** 300 minutes (5.0 hours)
* **Initial Detection:** 2026-10-18T19:43
* **Containment Completed:** 2026-10-18T22:43
* **Service Restored:** 2026-10-19T00:43

---

## Chronological Incident Timeline
* **10:14 UTC** — Automated anomaly detected: suspicious outbound shell socket on edge gateway.
* **10:28 UTC** — Incident response bridge convened; host isolated via EDR containment.
* **11:45 UTC** — Webshell binary identified in temporary directory; sha256 hash extracted.
* **13:30 UTC** — Edge WAF virtual patch deployed; zero active outbound beacons confirmed.

---

## Root Cause Analysis (The 5 Whys Methodology)
1. **Why was the system breached?** The adversary obtained remote root command execution on the edge appliance.
2. **Why was that possible?** A newly weaponized zero-day vulnerability existed in the telemetry reporting daemon.
3. **Why was that condition present?** The management web interface was exposed directly to the public Internet without ZTNA.
4. **Why was the architectural exposure active?** Legacy architecture placed administrative interfaces on public IP ranges.
5. **Root Cause:** Root Cause: Missing Zero Trust Network Access (ZTNA) perimeter segmentation policy.

---

## Qualitative Incident Review
### What Went Well
EDR network isolation severed C2 beaconing within 14 minutes of alert trigger. Offline backup integrity confirmed.

### What Could Be Improved
Telemetry logging was not mirrored off-host, delaying initial forensic disk timeline correlation.

---

## Preventative Remediation Action Items
| Task / Control | Assignee / Team | Priority | Mandated SLA |
| :--- | :--- | :--- | :--- |
| Migrate administrative portal behind Cloudflare Zero Trust tunnel | DevOps Lead | High | In 3 Days |
| Conduct tenant-wide Kerberos KRBTGT double-reset | IAM Team | High | Immediate |
| Deploy automated vulnerability SLA alerting script | SecOps Team | Medium | Next Sprint |

---
*Generated via SecOps Pulse Incident Post-Mortem & RCA Generator (https://www.secopspulse.com/post-mortem)*
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Preventative Security Defenses

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CrowdStrike FalconThreat Hunting & EDR Rollback

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1Password EnterpriseCredential & Secret Governance

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