Initial commit - 611 cybersecurity skills across all subdomains

skills/implementing-ransomware-backup-strategy/references/workflows.md

@@ -0,0 +1,175 @@
+# Workflows - Ransomware Backup Strategy
+
+## Workflow 1: Initial Backup Architecture Design
+
+```
+Start
+  |
+  v
+[Inventory all systems and data] --> Classify into Tier 1/2/3 by business impact
+  |
+  v
+[Define RPO/RTO per tier] --> Document in recovery plan
+  |
+  v
+[Select backup platform] --> Veeam / Rubrik / Commvault / Cohesity
+  |
+  v
+[Design 3-2-1-1-0 architecture]
+  |-- Copy 1: Local repository (fast restore)
+  |-- Copy 2: Secondary site/cloud (different media)
+  |-- Copy 3: Offsite (geographic separation)
+  |-- +1: Immutable or air-gapped copy
+  |-- +0: Automated restore verification
+  |
+  v
+[Isolate backup credentials]
+  |-- Remove from production AD
+  |-- Deploy MFA for backup admin access
+  |-- Segment backup network
+  |
+  v
+[Configure immutable storage]
+  |-- Linux Hardened Repository (XFS immutability)
+  |-- S3 Object Lock / Azure Immutable Blob
+  |-- Tape air-gap rotation
+  |
+  v
+[Set backup schedules per tier]
+  |
+  v
+[Configure automated restore testing]
+  |-- SureBackup / SureReplica
+  |-- Verify boot, network, application health
+  |
+  v
+[Document recovery runbook]
+  |
+  v
+End
+```
+
+## Workflow 2: Restore Verification Process
+
+```
+Start (Scheduled - Weekly for Tier 1, Monthly for Tier 2)
+  |
+  v
+[SureBackup job triggers VM restore to isolated sandbox]
+  |
+  v
+[VM boots in isolated network segment]
+  |
+  v
+[Heartbeat check] -- Fail --> Alert backup team
+  |
+  Pass
+  |
+  v
+[Network ping check] -- Fail --> Alert backup team
+  |
+  Pass
+  |
+  v
+[Application-specific check]
+  |-- AD: LDAP query test
+  |-- SQL: Database consistency check
+  |-- Web: HTTP 200 response
+  |-- Email: SMTP handshake
+  |
+  Fail --> Alert backup team with diagnostic details
+  |
+  Pass
+  |
+  v
+[Log successful restore] --> Update compliance dashboard
+  |
+  v
+[Clean up sandbox VMs]
+  |
+  v
+End
+```
+
+## Workflow 3: Emergency Ransomware Recovery
+
+```
+Ransomware Incident Declared
+  |
+  v
+[Isolate affected systems from network]
+  |
+  v
+[Verify backup integrity]
+  |-- Check immutable copies are unaffected
+  |-- Validate backup timestamps predate infection
+  |-- Scan backup files for ransomware artifacts
+  |
+  v
+[Determine recovery scope]
+  |-- Full environment rebuild vs. selective restore
+  |-- Prioritize by tier: AD/DNS first, then Tier 1, then Tier 2/3
+  |
+  v
+[Rebuild infrastructure in clean environment]
+  |-- Deploy clean OS images
+  |-- Restore AD from immutable backup
+  |-- Validate AD integrity with ADRestore/DSInternals
+  |
+  v
+[Restore applications in dependency order]
+  |-- Database servers before application servers
+  |-- Internal services before external-facing
+  |
+  v
+[Validate restored systems]
+  |-- Application functionality testing
+  |-- Data integrity verification
+  |-- Security control validation
+  |
+  v
+[Reconnect to network in phases]
+  |-- Monitor for re-infection indicators
+  |-- Validate no persistence mechanisms in restored systems
+  |
+  v
+[Post-recovery documentation and lessons learned]
+  |
+  v
+End
+```
+
+## Workflow 4: Backup Health Monitoring
+
+```
+Daily Automated Check
+  |
+  v
+[Query backup job status via API/PowerShell]
+  |
+  v
+[Check for failed or warning jobs]
+  |-- Failed --> Create P1 ticket, alert backup team
+  |-- Warning --> Create P3 ticket, investigate within 24hr
+  |-- Success --> Log and continue
+  |
+  v
+[Verify backup repository capacity]
+  |-- >85% utilization --> Alert for capacity planning
+  |-- >95% utilization --> Critical alert, backup jobs at risk
+  |
+  v
+[Check immutable copy synchronization]
+  |-- Verify last immutable copy is within RPO window
+  |-- Alert if immutable copy is stale
+  |
+  v
+[Generate weekly backup health report]
+  |-- Success rate percentage
+  |-- Data protected volume
+  |-- Restore test results
+  |-- Capacity forecast
+  |
+  v
+End
+```