CloudMask Secure Google Drive is a browser-based encryption add-on that applies end-to-end encryption to files stored in Google Drive. It is designed so that only explicitly trusted users can decrypt and view files — excluding cloud providers, third parties, governments, and the vendor itself from accessing file contents. Key characteristics: - Encryption keys are managed by the user, not the service provider - File names are encrypted in addition to file content, preventing metadata leakage to Google - Works with all file types stored in Google Drive - Files remain encrypted when accessed through third-party applications - Security certification recognized by 26 cybersecurity agencies worldwide Collaboration features: - Users can define a list of trusted contacts with whom encrypted file sharing is enabled - Files are automatically encrypted for trusted contacts without additional steps - Contact access can be revoked at any time - Invited contacts receive the same level of protection for their own Google Drive accounts The product is accessible as a Chrome extension and is aimed at business, enterprise, and individual users in sectors such as legal, financial, healthcare, and education. A free trial is available, with paid subscription plans offered.