NSS Communicator does not collect, transmit, or store any user data on external servers. All data — including cryptographic keys, contacts, and messages — is stored locally in your browser's IndexedDB. No analytics, no telemetry, no tracking. The extension makes zero network requests. All cryptographic operations use the browser's built-in Web Crypto API. Full source code is available at https://github.com/nexavision-tech/nss-communicator under GNU GPL v3.0. Contact: admin@nexavision.tech