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2026-07-13 12:35:03 +08:00

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Data Protection Impact Assessment (DPIA) Guide

Guide Origin: Official | ArcKit Version: [VERSION]

/arckit:dpia delivers a GDPR-compliant DPIA whenever processing could present high risk to individuals.


Minimum Inputs

Artefact Purpose
ARC-<id>-DATA-v1.0.md Supplies PII inventory, lawful basis, retention
Stakeholder analysis Highlights vulnerable groups, consultation needs
Risk register Seeds privacy risk scoring and mitigations

Trigger Checklist

Tick any that apply (two or more = DPIA mandatory per ICO):

  • Evaluation or scoring (profiling, ranking, credit risk)
  • Automated decisions with legal/significant effect
  • Systematic monitoring or surveillance
  • Special category or criminal offence data
  • Large scale processing (volume, geography, duration)
  • Dataset matching/combining
  • Vulnerable data subjects (children, patients, benefit claimants, etc.)
  • Innovative technology (AI/ML, biometrics, IoT)
  • Restricts ability to exercise data rights

ArcKit screens these automatically; use the list to confirm completeness.


Command

/arckit:dpia Generate DPIA for <project>

Output: projects/<id>/ARC-<id>-DPIA-v1.0.md

Auto-versioning: Re-running this command when a document already exists automatically increments the version (minor for refreshed content, major for changed scope) instead of overwriting.


Action Flow

1. Confirm prerequisites (data model + stakeholders + risks)
2. Run /arckit:dpia
3. Review:
   - Screening result and justification
   - Risk table and residual scores
   - Mitigation action plan and owners
4. Log actions in backlog/assurance tracker
5. Re-run after mitigations; seek ICO consultation if residual risk remains “High”

Sections to Validate

Section Focus Reviewer
Screening Criteria flagged for Article 35 Data Protection Officer
Processing Description Purposes, categories, data flows Service Owner / Product
Risk & Impact Harm scenarios, likelihood, severity Security, Legal
Mitigations & Controls Technical/organisational measures Engineering & Operations
Sign-off DPO, SIRO/SRO, Project Lead Governance board

Linkages

  • Feed mitigation actions into /arckit:risk and /arckit:servicenow.
  • Reference DPIA outcomes in /arckit:ai-playbook and /arckit:secure.
  • Store signed versions with review cadence (minimum annual refresh or when processing changes).