This extension does not collect, transmit, or sell any personal data. All profiles, per-site rules, and proxy credentials (including the password, if you set one) are stored only in your browser's local extension storage — never sent anywhere by the extension itself. The only exception: when you click "Test my proxy" or "Speed test", a request is sent to a public IP-check service (api.ipify.org) to verify connectivity — this happens only on that click, not automatically or in the background. Naturally, once you configure a proxy, your browsing traffic for proxied sites passes through that proxy server, which you chose and control — this extension has no visibility into or control over what that server does with your traffic.