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rxminder/docs/development/APPLICATION_SECURITY.md

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# Security Guide
## 🔐 Security Best Practices for Medication Reminder App
### **Password Security**
#### **Password Requirements**
- Minimum 8 characters
- Must contain uppercase and lowercase letters
- Must contain at least one number
- Must contain at least one special character
- Cannot be common passwords (password123, admin, etc.)
#### **Password Hashing**
- Uses bcrypt with salt rounds for secure password storage
- Passwords are never stored in plain text
- Password verification happens through secure hash comparison
### **Authentication Security**
#### **Session Management**
- JWT-like token system for user sessions
- Tokens have expiration times
- Secure token storage and transmission
- Automatic session cleanup on logout
#### **Email Verification**
- All new accounts require email verification
- Verification tokens are time-limited
- Prevents unauthorized account creation
- Uses cryptographically secure random tokens
#### **OAuth Security**
- Supports Google and GitHub OAuth
- Secure OAuth flow implementation
- No password storage for OAuth users
- Account linking prevention for security
### **Environment Security**
#### **Environment Variables**
- Never commit `.env` files to version control, especially `.env.production` which contains production credentials
- Use `.env.example` as a template for creating new environment files
- Create separate environment files for different deployment environments:
- `.env` - Local development
- `.env.staging` - Staging environment
- `.env.production` - Production environment
- Always add all `.env` files to `.gitignore` to prevent accidental commits
- Use environment variables for configuration to maintain security and flexibility
- Rotate credentials regularly and use strong, unique passwords for each environment
- Consider using a secrets management system for production environments
- Never hardcode sensitive information in source code
#### **Docker Security**
- Non-root user for application execution
- Multi-stage builds to minimize attack surface
- Health checks for service monitoring
- Isolated network for services
### **Database Security**
#### **CouchDB Security**
- Admin authentication required
- Database-level access control
- SSL/TLS encryption for production
- Regular backup and security updates
#### **Data Protection**
- User data isolation by user ID
- Input validation and sanitization
- Protection against injection attacks
- Secure data deletion capabilities
### **Production Security Checklist**
#### **Before Deployment**
- [ ] Change default admin password
- [ ] Configure strong CouchDB credentials
- [ ] Set up Mailgun with proper API keys
- [ ] Enable SSL/TLS certificates
- [ ] Configure firewall rules
- [ ] Set up monitoring and logging
#### **Regular Security Tasks**
- [ ] Rotate credentials monthly
- [ ] Update dependencies regularly
- [ ] Monitor logs for suspicious activity
- [ ] Backup databases securely
- [ ] Review user access permissions
- [ ] Test disaster recovery procedures
### **Incident Response**
#### **Security Breach Protocol**
1. **Immediate Response**
- Disable affected accounts
- Change all credentials
- Review access logs
- Document the incident
2. **Investigation**
- Identify breach source
- Assess data exposure
- Notify affected users
- Implement fixes
3. **Recovery**
- Restore from secure backups
- Update security measures
- Monitor for further issues
- Conduct post-incident review
### **Compliance Considerations**
#### **Data Privacy**
- User data minimization
- Right to data deletion
- Transparent privacy policy
- Secure data export capabilities
#### **Healthcare Compliance**
- HIPAA considerations for health data
- Secure medication information handling
- Audit trail capabilities
- Data retention policies
### **Security Monitoring**
#### **Logging**
- Authentication attempts
- Failed login monitoring
- Admin actions tracking
- Database access logging
#### **Alerting**
- Multiple failed login attempts
- Admin privilege escalation
- Unusual data access patterns
- System health issues
### **Emergency Contacts**
#### **Security Issues**
- Development Team: security@your-domain.com
- System Administrator: admin@your-domain.com
- Emergency Response: +1-XXX-XXX-XXXX
#### **Third-party Services**
- Mailgun Support: support@mailgun.com
- CouchDB Security: security@apache.org
- Docker Security: security@docker.com