Ransomware incident response template

Components in this architecture diagram

• Ransom note or mass encryption detected
• Isolate infected hosts from network
• Activate incident response team & legal
• Preserve evidence: memory, logs, ransom note
• Identify ransomware strain & entry point
• Scope affected systems & data
• Data exfiltration evidence?
• Assess breach notification duties
• Continue containment
• Reset credentials & block attacker C2 domains
• Clean offline backups available?
• Rebuild systems & restore from backups
• Executive & legal decision on recovery options
• Check free decryptors at No More Ransom
• Scan restored systems before reconnecting
• Reinfection detected?
• Notify regulators, insurers & customers
• Post-incident review & hardening
• Business operations restored

How to use this architecture diagram template

1. Click Open in the editor. The architecture diagram opens on a new page in FlowDiagram — nothing is uploaded and there is no sign-up.
2. Rename, add or delete shapes and drag them where you want; connectors stay attached as things move.
3. Drop in vendor logos from the library — 1,160 of them, including every AWS, Azure and Google Cloud service icon — or restyle it with the colour and theme controls.
4. Prefer text? Edit the Mermaid source below and paste it in through ☰ → Import diagram (see the Mermaid editor); it imports as an editable diagram.
5. Export to PNG, SVG or PDF, or press Ctrl+L for a link that carries the whole diagram.

Mermaid source

The whole template is the text below. Paste it into FlowDiagram, keep it in Git next to the code it describes, or hand it to an AI assistant to extend.

flowchart TD
  A((Ransom note or mass encryption detected)) --> B[Isolate infected hosts from network]
  B --> C[Activate incident response team & legal]
  C --> D[Preserve evidence: memory, logs, ransom note]
  D --> E[Identify ransomware strain & entry point]
  E --> F[Scope affected systems & data]
  F --> G{Data exfiltration evidence?}
  G -->|Yes| H[Assess breach notification duties]
  G -->|No| I[Continue containment]
  H --> I
  I --> J[Reset credentials & block attacker C2 domains]
  J --> K{Clean offline backups available?}
  K -->|Yes| L[Rebuild systems & restore from backups]
  K -->|No| M[Executive & legal decision on recovery options]
  M --> N[Check free decryptors at No More Ransom]
  N --> L
  L --> O[Scan restored systems before reconnecting]
  O --> P{Reinfection detected?}
  P -->|Yes| E
  P -->|No| Q[Notify regulators, insurers & customers]
  Q --> R[Post-incident review & hardening]
  R --> S((Business operations restored))

Related: System architecture diagram tool · Mermaid editor · All security & identity templates · All 521 templates