PinkRain is a privacy-first mental health and wellness tracking application built with security at its core. This document outlines our security policies, practices, and procedures for reporting security vulnerabilities.

Core Security Principle: All user data remains on-device and is never transmitted or collected by external services.

• Security Architecture
• Privacy-First Design
• Data Protection
• Supported Versions
• Reporting Security Vulnerabilities
• Security Best Practices
• Threat Model
• Security Features
• Third-Party Dependencies
• Security Testing

PinkRain implements a zero-trust, local-first architecture:

• No Data Collection: We never collect, store, or transmit user data
• Local Storage Only: All data is stored locally using encrypted Hive database
• No Cloud Sync: Data never leaves the user's device
• No Analytics: No user behavior tracking or telemetry
• Open Source: Full transparency through open-source code

1. Data Minimization: Only collect data necessary for app functionality
2. Local Encryption: Sensitive data is encrypted at rest
3. No Network Transmission: Personal data never leaves the device
4. Secure Dependencies: Regular security audits of third-party packages
5. Transparent Code: All security implementations are open source

• Encryption at Rest: Sensitive user data is encrypted using AES-256
• Secure Key Management: Encryption keys are generated and stored securely on-device
• Data Isolation: App data is sandboxed within the application container
• Secure Deletion: Proper data wiping when users delete information

• User Control: Users can delete their data at any time
• No Backup: We don't create external backups of user data
• App Uninstall: All data is removed when the app is uninstalled
• Data Export: Users can export their data in encrypted formats

We actively maintain and provide security updates for the following versions:

• Security Updates: Released within 48 hours for critical vulnerabilities
• Regular Updates: Monthly security reviews and updates
• End-of-Life: 12-month support window for major versions

We encourage responsible disclosure of security vulnerabilities. Please follow these guidelines:

Email: [email protected] (preferred) Subject: [SECURITY] PinkRain App Vulnerability Report

Please provide the following information:

1. Vulnerability Description: Clear description of the security issue
2. Steps to Reproduce: Detailed steps to reproduce the vulnerability
3. Impact Assessment: Potential impact and affected users
4. Proof of Concept: Code, screenshots, or logs (if applicable)
5. Suggested Fix: Recommendations for addressing the issue (optional)
6. Contact Information: How we can reach you for follow-up

• Initial Response: Within 24 hours of receiving the report
• Vulnerability Assessment: Within 72 hours
• Fix Development: 1-7 days (depending on severity)
• Release: Within 48 hours for critical issues
• Public Disclosure: 30 days after fix is released (coordinated disclosure)

We believe in recognizing security researchers who help make PinkRain more secure:

• Hall of Fame: Recognition in our security acknowledgments
• Credit: Public credit in release notes (with permission)
• Communication: Direct communication channel with development team

• Keep Updated: Always use the latest version of PinkRain
• Device Security: Use device lock screens and biometric authentication
• App Permissions: Review and understand requested permissions
• Regular Backups: Export your data regularly for personal backups
• Suspicious Activity: Report any unusual app behavior

• Secure Coding: Follow OWASP Mobile Security guidelines
• Input Validation: Validate all user inputs and data
• Dependency Updates: Keep all dependencies up to date
• Security Testing: Run security tests before releases
• Code Review: All security-related code must be peer-reviewed

1. Data Interception: Network-based attacks on user data
2. Local Data Access: Unauthorized access to on-device data
3. Malicious Dependencies: Compromised third-party packages
4. Code Injection: Attempts to inject malicious code
5. Privacy Violations: Unauthorized data collection or tracking

• Device-level security: Operating system vulnerabilities
• Physical device theft: Device encryption and lock screens
• Social engineering: User education and awareness
• Network infrastructure: ISP or network provider security

• Local Encryption: AES-256 encryption for sensitive data
• Secure Storage: Platform-specific secure storage APIs
• No Analytics: Zero telemetry or user tracking
• Minimal Permissions: Only essential permissions requested
• Sandboxed Execution: App runs in isolated environment

• Offline Operation: Full functionality without internet connection
• No User Accounts: No registration or login required
• No Cloud Services: All processing happens on-device
• Transparent Code: Open source for full transparency
• User Control: Complete control over personal data

When experimental AI features are enabled:

• Local ML: TensorFlow Lite models run entirely on-device
• No Cloud AI: No data sent to external AI services
• Secure Models: ML models are cryptographically signed
• Feature Isolation: Experimental features are sandboxed

We regularly audit our dependencies for security vulnerabilities:

• Automated Scanning: Daily dependency vulnerability scans
• Manual Review: Quarterly manual security reviews
• Version Pinning: Specific dependency versions to prevent supply chain attacks
• Minimal Dependencies: Only essential packages are included

• Vulnerability Monitoring: Automated alerts for security issues
• Update Strategy: Prompt updates for security patches
• Minimal Surface: Remove unused dependencies
• Source Verification: Verify package authenticity and integrity

• Static Analysis: Automated code security scanning
• Dependency Scanning: Regular vulnerability assessments
• Penetration Testing: Periodic security assessments
• Code Review: Security-focused peer reviews

• ✅ Data Encryption: Verify all sensitive data is encrypted
• ✅ Network Isolation: Ensure no unauthorized network requests
• ✅ Permission Validation: Verify minimal permission usage
• ✅ Input Validation: Test all user input handling
• ✅ Error Handling: Verify secure error handling

# Security testing commands
flutter analyze --fatal-infos
dart pub deps --json | dart pub global run pana
flutter test test/security/

As a mental health app, PinkRain handles highly sensitive personal information:

• HIPAA Awareness: While not HIPAA-covered, we follow similar privacy principles
• Mental Health Privacy: Extra protection for sensitive mental health data
• No Medical Claims: App disclaimers prevent medical liability
• Research Context: Data used only for personal tracking and research

• App Sandboxing: Android app sandbox provides isolation
• Keystore Integration: Android Keystore for secure key management
• Permission Model: Android 6+ runtime permission model
• App Signing: APK signing with strong cryptographic keys

• App Sandbox: iOS app sandbox provides process isolation
• Keychain Integration: iOS Keychain for secure credential storage
• App Transport Security: HTTPS enforcement for network requests
• Code Signing: Strong code signing requirements

• Browser Security: Relies on browser security model
• Local Storage: Encrypted local storage where supported
• HTTPS Only: All web requests over HTTPS
• CSP Headers: Content Security Policy headers

1. Detection: Automated monitoring and user reports
2. Assessment: Rapid evaluation of impact and scope
3. Containment: Immediate steps to prevent further impact
4. Investigation: Thorough analysis of the incident
5. Remediation: Fix development and deployment
6. Communication: Transparent user communication
7. Post-Incident: Lessons learned and process improvements

• Security Team: [email protected]
• General Support: [email protected]

• OWASP Mobile Security
• Flutter Security Guidelines
• Dart Security Best Practices
• Android Security Best Practices
• iOS Security Guidelines

• Digital Privacy Guide
• Mobile App Security Tips
• Mental Health Data Privacy

• Email: [email protected]
• PGP Key: Available upon request
• Response Time: 24 hours for security issues

• Email: [email protected]
• GitHub Issues: For non-security related issues
• GitHub Discussions: Community support and questions

This security policy is reviewed and updated regularly:

• Last Updated: August 30, 2024
• Version: 1.0
• Next Review: November 30, 2024

• 2024-08-30: Initial security policy creation
• 2024-08-30: Added threat model and security architecture
• 2024-08-30: Defined vulnerability disclosure process

We thank the security research community for helping make PinkRain more secure:

• Security researchers who report vulnerabilities responsibly
• The Flutter and Dart security teams for framework security
• The open-source security community for tools and guidance

This security policy is part of PinkRain's commitment to user privacy and security. By using PinkRain, you acknowledge that:

• Security is a shared responsibility between users and developers
• No system is 100% secure, but we strive for best practices
• Users should follow basic security hygiene on their devices
• This policy may be updated to reflect new security measures

🛏️ "Your mental health matters. Your privacy and security matter more." 🛏️

Made with ❤️ for privacy-first mental health technology