Privacy Policy

Our Commitment to Privacy

At Shield, privacy is not just a feature—it is the foundation of our entire platform. We have designed our service with a Zero-Knowledge architecture, which means that by design, we cannot access your data, files, or messages. This Privacy Policy explains how we handle the minimal information we do collect and how we protect your privacy.

Information We Do NOT Collect

Due to our Zero-Knowledge architecture, we cannot and do not collect:

• Your files or file contents
• Your messages or message contents
• Your encryption keys (generated client-side in your browser)
• Your passwords (we use secure authentication methods)
• Your browsing history within the app

Information We Collect

We collect only the minimal information necessary to provide our service:

• Wallet Address: Your blockchain wallet address for authentication and access control
• Policy Metadata: Basic information about sharing policies (recipient addresses, expiration dates, access limits) without the actual content
• Transaction Data: On-chain transaction hashes for transparency and auditability
• Usage Analytics: Anonymous, aggregated usage data to improve our service (no personal data)

How We Use Your Information

The limited information we collect is used solely to:

• Authenticate your access to the platform
• Enforce access controls you configure (expiration dates, view limits)
• Provide customer support when you contact us
• Improve our service through anonymous analytics
• Comply with legal obligations when required

Data Security

We employ industry-leading security measures:

• End-to-End Encryption: All files and messages are encrypted before leaving your device
• Client-Side Key Generation: Your encryption keys are generated in your browser and never transmitted to our servers
• Decentralized Storage: Encrypted data is stored on IPFS, a distributed network
• Blockchain Verification: Access permissions are recorded on-chain for transparency

Your Rights

You have the right to:

• Access any personal data we hold about you
• Request deletion of your account and associated metadata
• Revoke access to shared content at any time
• Export your policy data

Third-Party Services

We use the following third-party services:

• IPFS: Decentralized storage for encrypted data (content is encrypted before upload)
• Blockchain Networks: For access control and transaction recording
• Wallet Providers: For secure authentication (MetaMask, WalletConnect, etc.)

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify users of significant changes via our platform or email. Continued use of Shield after changes constitutes acceptance of the updated policy.

Contact Us

If you have questions about this Privacy Policy or our privacy practices, please contact us at:

Email: shieldencrypted@gmail.com