Vendor Security Review process diagram

This is a worked example. Wavelength built the diagram below from the description on this page. Nobody drew it by hand.

What was said

Procurement submits a vendor request when a new supplier is needed. Security sends the vendor a security questionnaire. The security team rates the vendor's risk. If the risk is high, legal reviews the data processing agreement. If the risk is low, the vendor goes straight to approval. Legal approves or flags redlines in the DPA. Once approved, the vendor is added to the approved vendor register.

The diagram

What is in this flow

• Systems: None.
• People and teams: Procurement, Security, Legal.
• Decisions: High Risk?, DPA Redlines?.
• Size: 13 steps and 14 connections.

Steps

1. Procurement
2. Vendor Request (Procurement)
3. Security
4. Send Questionnaire (Security)
5. Rate Risk (Security)
6. High Risk?
7. Legal
8. Review DPA (Legal)
9. DPA Redlines?
10. Resolve Redlines (Legal)
11. Approve Vendor (Security)
12. Add to Register (Procurement)
13. Vendor Onboarded

Mermaid code

Copy this into any Markdown file, GitHub README, or Mermaid Live to render the same flow.

flowchart TD
  n1(Procurement)
  n2([Vendor Request])
  n3(Security)
  n4[Send Questionnaire]
  n5[Rate Risk]
  n6{High Risk?}
  n7(Legal)
  n8[Review DPA]
  n9{DPA Redlines?}
  n10[Resolve Redlines]
  n11[Approve Vendor]
  n12[Add to Register]
  n13([Vendor Onboarded])
  n1 -->|submits| n2
  n2 -->|routes to| n3
  n3 -->|sends| n4
  n4 -->|vendor returns| n5
  n5 -->|rates| n6
  n6 -->|Yes| n7
  n6 -->|No| n11
  n7 -->|reviews| n8
  n8 -->|checks| n9
  n9 -->|Yes| n10
  n9 -->|No| n11
  n10 -->|revised| n8
  n11 -->|approved| n12
  n12 -->|adds to register| n13

Map your own process

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This example is part of our guide for compliance and audit.

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