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The privacy settings let you clamp down on browser characteristics that can be used to track or identify your browser uniquely. (Tor’s name once stood for The Onion Router, referring to a technical definition of onion.) IDG But it has its own privacy and security settings, reachable via a green onion icon in the toolbar. The Tor browser, which is built as a modified version of the Mozilla Foundation’s Firefox, enables a number of features by default, including always-on private browsing mode. It’s effectively a series of anonymized VPN tunnels. Encryption established by the originating browser prevents any snooper learning more about the full pathway. No router knows about anything except the immediately previous and successive connections. Each session, which lasts about 10 minutes, creates a “circuit” through a randomly selected set of routers. The Tor browser, a multi-platform Web viewer that relies on passing through a series of encrypted tunnels to and between Tor routers that are run by volunteers and organizations around the world. Each Tor session creates a “circuit” through intermediate routers, none of which knows the full path.
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