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Security Guideline Document

Security Guideline Document for "Xmind AI Desktop Client"

1. Introduction

This document outlines security protocols for the Xmind AI Desktop Client (v3.8.1+), a cross-platform mind-mapping application (Windows/macOS/Linux). Security focuses on protecting user data (e.g., project files, AI-generated content) and preventing unauthorized access, data breaches, and malware injection during download, installation, and operation.

2. Security Objectives

  • CIA Triad Enforcement:
    • Confidentiality: Encrypt user data at rest/transit.
    • Integrity: Validate software updates and user files.
    • Availability: Ensure 99.9% uptime for update servers via DDoS mitigation.
  • Compliance: GDPR, CCPA, and OWASP Top 10 for Desktop Apps.

3. Security Architecture

Security Architecture Diagram
Components:

  • Client Layer: Electron.js (v26.1.0) with sandboxed renderer processes.
  • Network Layer: Cloudflare (WAF + TLS 1.3) for download servers.
  • Data Layer: AES-256-GCM for local file encryption.

4. Technical Implementation

4.1 Secure Download & Installation
  • Authenticode/Signing:
    • Windows: EV Code Signing (DigiCert) for .exe/.msi.
    • macOS: Notarization via Apple Developer ID.
    • Linux: GPG-signed repositories (Debian/RPM).
  • Integrity Checks:
    • SHA-3-512 checksums for installers, verified pre-launch.
    • Update packages signed via OpenPGP (GnuPG v2.4.3).
4.2 Authentication & Authorization
  • OAuth 2.0 + OpenID Connect:
    • Auth0 (or Keycloak v22.0) for cloud-sync accounts.
    • JWT tokens (RS256, 15-min expiry) for session management.
  • Local Auth:
    • Biometric/PIN unlock (Windows Hello/Touch ID).
    • Rate limiting (5 attempts/hr) for password entry.
4.3 Data Protection
  • At Rest:
    • SQLCipher (v4.5.1) for local database (projects/metadata).
    • Files encrypted via AES-256-GCM (Crypto++ v8.8).
  • In Transit:
    • HTTPS (HSTS preload) for all API calls (update checks, AI features).
    • Certificate pinning using electron-trusted-http.
4.4 Runtime Security
  • Sandboxing:
    • Electron contextIsolation and sandbox flags enabled.
    • Restricted Node.js integration (IPC-limited modules).
  • AI Feature Security:
    • Local LLM execution (e.g., via ONNX Runtime) for sensitive prompts.
    • Cloud AI: Zero data retention policy; TLS 1.3 + mutual TLS (mTLS) for API.
4.5 Vulnerability Management
  • Static/Dynamic Analysis:
    • SAST: SonarQube (v10.2) + ESLint security rules.
    • DAST: OWASP ZAP (v2.14) for network interfaces.
  • Dependency Scanning:
    • OWASP Dependency-Check (v8.4.0) + Snyk (v1.1266) for CVE monitoring.

5. Network Security Controls

  • Firewall Rules:
    • Outbound traffic restricted to *.xmind.com (ports 443/80).
    • Block unauthorized local network access (e.g., SMB).
  • Anti-Malware Integration:
    • Windows: Windows Defender API hooks for file I/O scanning.
    • macOS: XProtect-compatible quarantine API.

6. Incident Response & Monitoring

  • Logging:
    • Centralized logging via Winston (v3.11.0) with audit trails (user actions, auth events).
    • Logs encrypted and forwarded to SIEM (Splunk Enterprise v9.2).
  • Incident Playbook:
    • Ransomware Detection: Isolate client, revoke tokens, restore from encrypted backups (AWS S3 versioned).
    • Zero-Day Exploit: Deploy hotfixes via incremental updates (<5MB patches).

7. Maintenance & Compliance

  • Patch Management:
    • Critical updates auto-applied (user-opt-out).
    • Monthly CVE reviews; 72-hour SLA for critical fixes.
  • Audits:
    • Annual penetration tests (PTaaS via HackerOne).
    • FIPS 140-2 validation for crypto libraries.

8. Conclusion

This framework ensures the Xmind AI Desktop Client adheres to industry security standards while balancing usability. Future enhancements include post-quantum cryptography (CRYSTALS-Kyber) and hardware-backed TPM/HSM integration.

Document Version: 1.2
Last Updated: 2023-10-05
Contact: security@xmind.com