CyberVault - Secure Offline Password Manager for Windows
CyberVault is a free, open-source password manager and secure credential vault for Windows users who prioritize privacy and local data control. Built with C# and military-grade encryption, CyberVault stores all your passwords offline on your computer - no cloud, no third-party servers, complete privacy.
Perfect for: Security-conscious users, privacy advocates, businesses requiring offline password storage, and anyone seeking a reliable alternative to cloud-based password managers like LastPass, Bitwarden, or 1Password.
Developed by CyberHansen and CyberNilsen | Featured in Laagendalsposten newspaper 🇳🇴
✅ Project Status: Stable
CyberVault is production-ready and actively maintained. While major new features are not being added right now, we continue releasing security updates and bug fixes.
🎯 Why Choose CyberVault?
🔐 Ultimate Privacy: Unlike online password managers, your sensitive data never leaves your device
🏠 100% Offline: No internet required after installation - perfect for air-gapped systems
🛡️ Military-Grade Security: AES encryption with industry-standard cryptographic algorithms
💻 Windows Native: Optimized specifically for Windows 10/11 with native WPF interface
🆓 Completely Free: Open-source MIT license - inspect the code yourself
🌐 Browser Integration: Chrome extension available for seamless web password management
🚀 Key Features
Password Management
- Secure Password Storage: AES-256 encryption with PBKDF2 key derivation
- Password Generator: Create strong, unique passwords with customizable complexity
- Auto-Fill Integration: Chrome extension for automatic login form completion
- Import/Export: Migrate from other password managers (JSON support)
- Search & Filter: Quickly find credentials with built-in search functionality
Security Features
- Zero-Knowledge Architecture: Only you have access to your master password
- Secure Memory Handling: Credentials cleared from memory after use
- Backup & Restore: Encrypted backup files for data protection
- Two-Factor Authentication Ready: Supports TOTP codes and 2FA workflows
- Secure Notes: Can write notes and store the notes securely
User Experience
- Intuitive Interface: Clean, modern WPF design optimized for Windows
- Fast Performance: Native C# application with minimal resource usage
- Portable Mode: Run from USB drive without installation
- Multiple Vaults: Organize credentials into separate encrypted databases
🛠️ Technology Stack
- Language: C# (.NET Framework/Core)
- UI Framework: WPF (Windows Presentation Foundation)
- Cryptography: System.Security.Cryptography, AES-256, PBKDF2
- Database: Encrypted file storage in user's AppData folder - no external database dependencies
- Browser Extension: JavaScript/Chrome Extensions API
- Build System: Visual Studio 2022, MSBuild
🚀 Quick Start Installation
Method 1: Download Release (Recommended)
- Visit our Releases page
- Download the latest
- Run installer and follow setup wizard
- Launch CyberVault from Start Menu
Method 2: Build from Source
# Clone the repository
git clone https://github.com/CyberNilsen/CyberVault.git
cd CyberVault
# Open in Visual Studio 2022
# Build > Build Solution (Ctrl+Shift+B)
# Debug > Start Without Debugging (Ctrl+F5)System Requirements
- OS: Windows 10 version 1809 or later / Windows 11
- Framework: .NET Framework 4.8 or .NET 6.0 Runtime
- Memory: 512 MB RAM minimum (1 GB recommended)
- Storage: 300 MB free disk space
- Architecture: x64 (64-bit) systems only
💡 Usage Guide
First Time Setup
- Launch CyberVault from desktop shortcut or Start Menu
- Create Master Password: Choose a strong, memorable master password
- Set Security Settings: Configure auto-lock timeout and backup preferences
- Add Your First Password: Click "Add New" to store your first credential
Daily Workflow
- Auto-Fill: Install Chrome extension for seamless web form filling
- Search: Type in search box to instantly find any stored password
- Generate: Use built-in generator for new account passwords
- Backup: Regular encrypted backups ensure you never lose data
🌐 Browser Extension
Install our official Chrome extension for seamless password management:
Extension Features:
- Auto-detect login forms on websites
- One-click password filling
- Generate passwords directly in browser
- Secure communication with desktop app
- Works with all Chromium browsers
🔒 Security & Privacy
Encryption Details
- Algorithm: AES-256 in CBC mode with PKCS7 padding
- Key Derivation: PBKDF2-SHA256 with 1,000,000 iterations and cryptographically secure random salt
- Storage: Encrypted files stored locally in
%AppData%\Roaming\CyberVault- no database required - Memory Protection: Sensitive data cleared from memory after use with secure memory handling
Privacy Commitments
- ✅ No Data Collection: We never collect, store, or transmit your data
- ✅ No Analytics: No tracking, no telemetry, no usage statistics
- ✅ No Network Calls: Application works 100% offline after installation
- ✅ Open Source: All code is publicly auditable on GitHub
- ✅ Local Storage Only: Everything stays on your computer, always
Security Auditing
- Regular security reviews by the development team
- Automated dependency scanning with GitHub Security Advisories
📊 Comparisons
| Feature | CyberVault | LastPass | Bitwarden | 1Password |
|---|---|---|---|---|
| Offline Storage | ✅ Complete | ❌ Cloud-only | ❌ Cloud-only | ❌ Cloud-only |
| Open Source | ✅ MIT License | ❌ Proprietary | ✅ GPL | ❌ Proprietary |
| Windows Native | ✅ WPF App | ❌ Web-based | ❌ Electron | ❌ Electron |
| Cost | ✅ Free Forever | 💰 $3/month | 💰 $10/year | 💰 $36/year |
| Zero-Knowledge | ✅ True Offline | ⚠️ Server-side | ⚠️ Server-side | ⚠️ Server-side |
🤝 Contributing
We welcome contributions from the cybersecurity and open-source community!
Ways to Contribute
- 🐛 Bug Reports: Found an issue? Open an issue
- 💡 Feature Requests: Suggest improvements or new features
- 🔧 Code Contributions: Submit pull requests for bug fixes or enhancements
- 📖 Documentation: Help improve our documentation and guides
- 🌐 Translations: Localize CyberVault for your language
- 🔐 Security Research: Responsible disclosure of security vulnerabilities
Development Setup
git clone https://github.com/CyberNilsen/CyberVault.git
cd CyberVault
# Open CyberVault.sln in Visual Studio 2022
# Install NuGet packages and buildPlease read our Contributing Guidelines and Code of Conduct.
📜 License & Legal
This project is licensed under the MIT License - see the LICENSE file for details.
Legal Notice: CyberVault is provided "as-is" without warranty. Users are responsible for maintaining backups of their passwords.
🗞️ Media & Recognition
Featured in Laagendalsposten: CyberVault was highlighted in Norway Kongsberg's local news.
🔗 Read the full article (Norwegian)
🌐 Links & Resources
- 🌍 Official Website: cybernilsen.github.io/CyberVault-website
- 📱 Chrome Extension: CyberVault Extension Repository
- 📧 Support Email: [email protected]
- 🐛 Bug Reports: GitHub Issues
- 💬 Discussions: GitHub Discussions
🙌 Acknowledgments
Beta Testers & Contributors
Special thanks to our dedicated testers who helped make CyberVault secure and reliable:
Open Source Dependencies
- System.Security.Cryptography - .NET cryptographic APIs
⭐ Support the Project
If CyberVault helps keep your passwords secure, please:
- ⭐ Star this repository on GitHub
- 🔄 Share with friends and colleagues who value privacy
- 🐛 Report bugs to help us improve security
- 💡 Suggest features for future versions
- 🤝 Contribute code to the open-source community
Download CyberVault today and take control of your digital security!
Keywords: password manager, offline password manager, Windows password vault, secure credential storage, open source security, privacy-focused password manager, local password storage, encrypted password database, cybersecurity tools, password generator, Chrome extension password manager