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docs/design/cloud-api/07-security-compliance.md

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+# Simple Container Cloud API - Security & Compliance
+
+## Overview
+
+The Simple Container Cloud API implements enterprise-grade security controls and compliance measures to protect sensitive infrastructure configurations, credentials, and operational data.
+
+## Security Architecture
+
+### Data Protection
+
+#### Encryption at Rest
+All sensitive data encrypted using AES-256-GCM with automatic key rotation:
+
+```go
+type EncryptionService struct {
+    currentKey   *crypto.AESKey
+    previousKeys map[string]*crypto.AESKey
+}
+
+func (es *EncryptionService) Encrypt(plaintext []byte) (*EncryptedData, error) {
+    // Generate random nonce, encrypt with AES-256-GCM
+    // Return encrypted data with key ID for rotation support
+}
+```
+
+#### Database Field-Level Encryption
+- User PII and credentials automatically encrypted
+- Cloud service account keys encrypted with separate key rotation
+- Stack secrets double-encrypted (application + database layer)
+
+### Authentication Security
+
+#### Multi-Factor Authentication (MFA)
+- TOTP support with encrypted secret storage
+- WebAuthn/FIDO2 hardware security keys
+- Backup codes for recovery scenarios
+- MFA required for administrative operations
+
+```go
+type MFAService struct {
+    db        *mongo.Database
+    encryptor *EncryptionService
+}
+
+func (mfa *MFAService) VerifyTOTP(ctx context.Context, userID, token string) (bool, error) {
+    // Decrypt TOTP secret, verify token with time window tolerance
+}
+```
+
+#### Session Security
+- JWT tokens with short expiration (1 hour)
+- Refresh token rotation
+- Concurrent session limits per user
+- Geographic anomaly detection
+
+### Authorization & Access Control
+
+#### Secure RBAC Implementation
+- Rate-limited permission checks
+- Privilege escalation detection
+- Comprehensive audit logging of all permission checks
+- Dynamic permission evaluation with context awareness
+
+```go
+func (srbac *SecureRBACService) CheckPermission(ctx context.Context, userID, resource, action string) (bool, error) {
+    // Rate limiting, input validation, escalation detection
+    // Audit all permission checks
+}
+```
+
+#### API Security
+- Input validation and sanitization
+- SQL injection and XSS pattern detection
+- Request size limits and content-type validation
+- WAF integration for advanced threat detection
+
+## Infrastructure Security
+
+### Container Security
+- Automated vulnerability scanning of container images
+- Runtime security monitoring with Falco
+- Non-root container enforcement
+- Resource limits and security contexts
+
+### Network Security
+- TLS 1.3 for all communications
+- VPC isolation with private subnets
+- Network segmentation between services
+- DDoS protection and geographic filtering
+
+## Compliance Framework
+
+### SOC 2 Type II Compliance
+
+#### Security Controls Implementation
+- **CC6.1**: Logical and physical access controls with MFA
+- **CC6.2**: Role-based authentication and authorization
+- **CC6.3**: Network security with encryption and monitoring
+- **CC7.1**: Continuous system monitoring and alerting
+- **CC7.2**: Encrypted backups with tested recovery procedures
+
+#### Audit and Monitoring
+```go
+type SOC2ComplianceService struct {
+    auditLogger   *AuditLogger
+    accessManager *AccessManager
+}
+
+func (soc *SOC2ComplianceService) GenerateComplianceReport() (*SOC2Report, error) {
+    // Assess all SOC 2 controls, generate compliance score
+}
+```
+
+### GDPR Compliance
+
+#### Data Subject Rights
+- **Right of Access**: Automated data export functionality
+- **Right to Rectification**: Secure data update mechanisms
+- **Right to Erasure**: Complete data deletion with referential integrity
+- **Data Portability**: Structured data export in common formats
+
+```go
+type GDPRComplianceService struct {
+    db            *mongo.Database
+    anonymizer    *DataAnonymizer
+}
+
+func (gdpr *GDPRComplianceService) ProcessDataSubjectRequest(ctx context.Context, request *DataSubjectRequest) error {
+    // Handle GDPR requests with identity verification
+}
+```
+
+#### Privacy by Design
+- Data minimization in collection and storage
+- Purpose limitation for all data processing
+- Consent management for optional data collection
+- Regular data retention policy enforcement
+
+### Additional Compliance Standards
+
+#### HIPAA Compliance (Healthcare customers)
+- PHI encryption with FIPS 140-2 Level 3 validated modules
+- Access controls with minimum necessary principle
+- Audit logs with tamper protection
+- Business Associate Agreement (BAA) support
+
+#### ISO 27001 Alignment
+- Information Security Management System (ISMS)
+- Risk assessment and treatment procedures
+- Incident response and business continuity planning
+- Regular security awareness training requirements
+
+## Security Monitoring & Incident Response
+
+### Real-Time Monitoring
+```go
+type SecurityMonitoringService struct {
+    falcoClient    *falco.Client
+    alertManager   *AlertManager
+    responseEngine *IncidentResponseEngine
+}
+
+func (sms *SecurityMonitoringService) HandleSecurityEvent(ctx context.Context, event *SecurityEvent) {
+    // Categorize severity, trigger automated response, escalate if needed
+}
+```
+
+### Incident Response Framework
+- **Detection**: Automated security event correlation
+- **Analysis**: Threat intelligence integration
+- **Containment**: Automated quarantine capabilities
+- **Recovery**: Rollback and restoration procedures
+- **Lessons Learned**: Post-incident review and improvement
+
+### Vulnerability Management
+- **Scanning**: Automated vulnerability assessment
+- **Assessment**: Risk-based prioritization
+- **Remediation**: Automated patching where possible
+- **Verification**: Continuous validation of fixes
+
+## Key Security Features
+
+### Secrets Management
+- Integration with HashiCorp Vault for enterprise deployments
+- Automatic rotation of service account credentials
+- Encrypted storage of all sensitive configuration data
+- Secure distribution to Simple Container provisioning engine
+
+### Backup & Recovery
+- Encrypted backups with geographically distributed storage
+- Point-in-time recovery capabilities
+- Regular backup testing and validation
+- RTO/RPO targets: 4 hours/1 hour respectively
+
+### Security Hardening
+- Container images based on distroless/minimal base images
+- Regular security updates with automated testing
+- Principle of least privilege for all service accounts
+- Network policies restricting inter-service communication
+
+This comprehensive security and compliance framework ensures that the Simple Container Cloud API meets enterprise security requirements while maintaining the simplicity and usability that users expect from Simple Container.