Security & Data Protection

1. Zero-Knowledge Architecture

1.1 Local-Only Data Storage

The most secure data is data that never leaves your control:

• Complete Local Storage: All grading data stored exclusively on your device
• No Cloud Dependencies: Core functionality works entirely offline
• Zero Server Access: We cannot see, access, or retrieve your data
• Air-Gapped Security: Student data physically isolated from internet threats

1.2 Privacy by Design

• No user tracking or analytics on sensitive data
• Minimal data collection for software operation only
• No third-party integrations that access student data
• Built-in privacy controls and data ownership

2. Encryption and Data Protection

2.1 Military-Grade Encryption

2.2 Access Controls

• Master Password Protection: Single secure password protects all data
• Optional 2FA: Two-factor authentication for additional security
• Session Timeouts: Automatic logout after inactivity
• Failed Attempt Lockout: Protection against brute force attacks

2.3 Secure Communication

When internet communication is necessary:

• TLS 1.3 encryption for all web communications
• Certificate pinning to prevent man-in-the-middle attacks
• Authenticated connections for license verification
• No student data transmitted over any network

3. Compliance and Standards

3.1 Educational Privacy Compliance

3.2 International Standards

3.3 Security Frameworks

• NIST Cybersecurity Framework: Aligned with federal cybersecurity standards
• ISO 27001 Principles: Information security management best practices
• OWASP Guidelines: Secure coding practices implemented
• Common Criteria: Security evaluation standards considered

4. Security Auditing and Monitoring

4.1 Local Audit Trails

Comprehensive logging of all data access and modifications:

• User login and logout times
• Data access and modification timestamps
• Failed authentication attempts
• System configuration changes
• Backup and restore operations

4.2 Security Monitoring

• Intrusion Detection: Monitor for unauthorized access attempts
• File Integrity: Detect unauthorized changes to system files
• Anomaly Detection: Alert on unusual usage patterns
• Security Notifications: Real-time alerts for security events

4.3 Third-Party Security Assessments

5. Incident Response and Recovery

5.1 Data Recovery

• Automated Backups: Regular local backups with encryption
• Point-in-Time Recovery: Restore to specific dates
• Corruption Detection: Automatic detection and repair of corrupted data
• Export Options: Multiple formats for data portability

5.2 Security Incident Response

5.3 Business Continuity

• Local storage ensures continued access during outages
• Offline functionality maintains productivity
• Regular backups protect against hardware failure
• Multiple recovery options available

6. Vulnerability Management

6.1 Security Updates

• Automatic Security Patches: Critical security updates applied automatically
• Regular Releases: Monthly security and stability updates
• Emergency Patches: Rapid response to critical vulnerabilities
• Update Verification: Cryptographic verification of update integrity

6.2 Responsible Disclosure

6.3 Supply Chain Security

• Secure development environment with access controls
• Code signing for software authenticity verification
• Third-party component security scanning
• Secure software distribution channels

7. Security Best Practices for Users

7.1 Password Security

• Use a strong, unique master password
• Enable two-factor authentication if available
• Change passwords regularly (annually recommended)
• Don't share passwords with others

7.2 Device Security

• Keep your operating system updated
• Use antivirus software and firewalls
• Lock your computer when stepping away
• Secure physical access to your device

7.3 Data Management

• Regular backups to secure locations
• Test restore procedures periodically
• Secure disposal of old devices
• Follow institutional data policies

8. Security Contact and Resources