docs: add comprehensive security implementation roadmap
Created detailed 6-phase implementation plan for security framework (inst_041-046).
**Overview:**
- 8-14 week timeline across 6 phases
- Exclusive use of sovereign tools (ClamAV, YARA, SpamAssassin, fail2ban, Redis)
- Proton suite for secure email
- Signal for text/video communication
- Defense-in-depth architecture
**Phases:**
**Phase 1: Foundation (1-2 weeks)**
- Install all sovereign tools (ClamAV, YARA, fail2ban, Redis)
- Set up logging infrastructure
- Configure ProtonMail and Signal communication channels
- Create security documentation structure
**Phase 2: File & Email Security (2-3 weeks)**
- Implement file upload validation middleware (inst_041)
- Configure email security stack (postfix, SpamAssassin, amavisd-new)
- Set up quarantine management for suspicious files/emails
- DKIM/SPF/DMARC validation
**Phase 3: Application Security (1-2 weeks)**
- Deploy form input sanitization (inst_043)
- Implement HTTP security headers (inst_044)
- Add CSRF protection
- Configure CSP violation reporting
**Phase 4: API Protection (1-2 weeks)**
- Tiered rate limiting (public/authenticated/admin)
- JWT authentication (15min access, 7day refresh)
- IP blocking after repeated violations
- Request validation and response sanitization
**Phase 5: Monitoring & Alerting (2-3 weeks)**
- Build security monitoring dashboard
- Integrate fail2ban with security logs
- Configure ProtonMail alert system
- Set up Signal notifications for critical events
- Automate weekly security reports
**Phase 6: Integration & Hardening (1-2 weeks)**
- Comprehensive integration testing
- Penetration testing
- Performance optimization
- Complete security documentation
- Team training and incident response drills
**Key Features:**
- Complete code examples for all middleware
- Detailed tool configuration files
- Testing procedures for each phase
- Success criteria and rollback plans
- Resource requirements (personnel, infrastructure)
- Risk mitigation strategies
- Post-implementation maintenance schedule
- Incident response playbook
- Communication protocols (ProtonMail + Signal)
**Documentation Includes:**
- Tool installation procedures
- Configuration examples
- Integration code
- Testing procedures
- Alert threshold definitions
- Incident classification levels
- Team training modules
- Timeline and resource estimates
Total effort: 240-330 person-hours across 8-14 weeks.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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