🔀 Segregation of Duties Skill

🎯 Purpose

Enforce role separation and implement compensating controls for single-person operations.

Key Principle: "One person shouldn't have unchecked power over critical processes."

📚 Scope

🔐 Role Separation Requirements
🛡️ Compensating Controls (single-person company context)
🔄 Dual Control Processes
📊 Access Reviews
⚖️ Conflict of Interest Prevention

⚙️ Security Rules

MUST Requirements

role_separation:
  development_vs_production:
    - separate_accounts: dev_and_prod_aws_accounts
    - approval_required: pr_review_before_merge
    - automated_testing: ci_cd_pipeline_validation
  
  financial_vs_technical:
    - separate_tools: different_systems_for_finance_and_tech
    - audit_trail: all_transactions_logged
    - third_party_validation: accountant_reviews_financials
  
compensating_controls:
  single_person_company:
    - automation: ci_cd_prevents_manual_errors
    - third_party_review: external_auditor_or_consultant
    - documentation: all_changes_documented_and_logged
    - transparency: public_isms_for_client_review
  
dual_control_processes:
  production_deployment:
    - automated_pipeline: github_actions_with_tests
    - manual_approval: ceo_approval_via_pr_merge
    - rollback_capability: immediate_rollback_if_issues
  
  financial_transactions:
    - bank_requires_bkid: separate_authentication_factor
    - accountant_review: quarterly_financial_review
    - audit_trail: all_transactions_logged_in_accounting_software

MUST NOT Prohibitions

prohibited:
  - bypass_controls: skip_ci_cd_and_deploy_directly
  - self_approve_financials: no_external_validation
  - delete_audit_logs: remove_evidence_of_actions
  - shared_credentials: use_same_password_everywhere

💡 Example: Production Deployment Controls

deployment_process:
  development:
    developer: ceo_creates_feature_branch
    testing: automated_unit_e2e_security_tests
    code_review: self_review_with_ai_assistance
  
  pre_production:
    pull_request: github_pr_to_main_branch
    automated_checks:
      - sonarcloud: code_quality_security_scan
      - dependabot: dependency_vulnerability_check
      - codecov: test_coverage_minimum_80_percent
    approval: ceo_approves_pr_after_all_checks_pass
  
  production:
    automated_deployment: github_actions_on_merge
    monitoring: cloudwatch_alarms_for_errors
    rollback: automated_rollback_on_failure
  
  post_deployment:
    verification: smoke_tests_in_production
    documentation: changelog_updated
    audit_log: deployment_recorded_in_cloudtrail

🔗 Integration

Policies: Information Security, Change Management

Skills: access-control, secure-development

Frameworks: ISO 27001 A.8.2, SOC 2 CC6.3, NIST CSF PR.AC-04

📋 Document Control

Version: 1.0 | Updated: 2026-02-10
License: Apache-2.0
Classification: