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Add LGPD compliance audit reports (RIPD and technical findings) - #225

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Add LGPD compliance audit reports (RIPD and technical findings)#225
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claude/lgpd-privacy-design-audit-5tnvnx

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Summary

This PR adds comprehensive LGPD (Brazilian data protection law) compliance documentation for the BuildToValue system, including a detailed Data Protection Impact Report (RIPD) and a technical audit report identifying 48 findings across the codebase.

Changes

  • RIPD.md (646 lines): Complete Data Protection Impact Report documenting:

    • System architecture and data flows from a privacy perspective
    • Dual roles under LGPD (operator and controller)
    • 8 identified data processing purposes (F1-F8)
    • 10 P0 (critical) unmitigated risks including:
      • Sensitive data (Art. 11) stored in plaintext in append-only WAL
      • Complete absence of encryption at rest
      • No data subject rights endpoints (Art. 18)
      • Authentication bypass vulnerabilities
      • International data transfers without Art. 33 mechanisms
    • 17 P1 and 21 P2 additional risks
    • Detailed data inventory across 9 database tables and 6 persistent storage sinks
    • Data flow diagrams and lifecycle analysis
    • Remediation roadmap by risk severity
  • RELATORIO_TECNICO_LGPD.md (2428 lines): Technical audit report with evidence-based findings linked to specific code locations

Key Findings

The audit identifies a critical pattern: asymmetry between the compliance rules BTV enforces on client systems and the rules it follows itself. For example:

  • BTV detects unencrypted data at rest in client systems but stores sensitive data unencrypted in its own SQLite databases
  • BTV requires valid legal basis for sensitive data processing but declares invalid bases in its own ROPA
  • BTV enforces PII masking before processing but stores raw inputs in its ledger

Status

This is a diagnostic audit, not a remediation. No findings have been fixed in this delivery. The document explicitly notes that residual risks are not acceptable for real personal data processing, particularly sensitive data under Art. 11, and recommends against production use until critical risks are mitigated.

The RIPD was not approved by a DPO and is intended to inform the remediation roadmap.

https://claude.ai/code/session_01ENiZaB8nqSzosiUWLzRgRC

… + RIPD

Revisão de conformidade do próprio BTV com a Lei 13.709/2018 e com os 7
princípios de Privacy by Design, cobrindo backend (Rust + Python), frontend,
infraestrutura, banco de dados, ML/LLM, integrações e documentação.

Dois entregáveis, nenhum dos quais existia no repositório:

- docs/privacy/RELATORIO_TECNICO_LGPD.md — 48 achados verificados, cada um com
  localização arquivo:linha, artigo violado, princípio PbD, cenário de dano,
  recomendação técnica e trecho de código como evidência; cobertura item a item
  dos 13 blocos do checklist; plano de remediação em 4 ondas.
- docs/privacy/RIPD.md — Relatório de Impacto à Proteção de Dados (Art. 5º, XVII
  e Art. 38): inventário de dados, fluxos, transferências internacionais, bases
  legais por finalidade, medidas de segurança, retenção, direitos do titular,
  riscos residuais com referência ao Art. 52, e bloco de aprovação.

Severidade: 10 P0, 17 P1, 21 P2. Os P0 incluem gravação de dado sensível do
Art. 11 em claro no WAL append-only, ausência total de criptografia em repouso,
inexistência de expurgo e de endpoints de direitos do titular, ausência de
controle de finalidade, bypass de autenticação no gateway e transferência
internacional sem mecanismo do Art. 33.

Nenhum arquivo de produção foi alterado — esta é a auditoria, não a remediação.
Os documentos não foram adicionados ao nav do mkdocs.yml, para não publicar o
detalhe de exploração no site enquanto os P0 estiverem abertos.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ENiZaB8nqSzosiUWLzRgRC
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