Add incident response procedure v1.2

procedures/incident-response.md

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+# Incident Response Procedure
+
+**Version:** 1.2  |  **Owner:** SOC  |  **Classification:** Internal
+
+## Severity classification
+
+| Level | Description | Initial Response Time | War room |
+|-------|-------------|----------------------|---------|
+| P1 | Active breach / data exfiltration | 15 minutes | Mandatory |
+| P2 | Suspected compromise / malware | 1 hour | If needed |
+| P3 | Security anomaly / suspicious activity | 4 hours | No |
+| P4 | Policy violation / low risk | Next business day | No |
+
+## P1 / P2 response steps
+
+1. **Contain** — isolate affected systems immediately
+2. **Preserve** — snapshot disks, preserve logs before remediation
+3. **Notify** — CISO, legal, communications lead
+4. **Investigate** — forensic analysis, determine scope
+5. **Eradicate** — remove threat actor access
+6. **Recover** — restore from clean backups
+7. **Lessons learned** — post-incident review within 2 weeks
+
+## Contacts
+
+- SOC hotline: +49 69 123 456 (24/7)
+- CISO: direct mobile (see 1Password "emergency contacts")
+- Legal: legal@nexus.local