A concise presentation: what Trezor Bridge is, why it matters, and how to use it safely.
Trezor Bridge — The Secure Gateway to Your Hardware Wallet is the small, trusted bridge software that lets your Trezor hardware device talk securely to web-based wallets and your computer. It creates an isolated, encrypted channel between the Trezor device and browser applications so that private keys never leave the device. In short: Bridge handles the safe connection, the handshake, and the transport while the Trezor device keeps your secrets.
Bridge limits the attack surface: browsers communicate locally with Bridge rather than directly with USB-connected hardware.
Available for Windows, macOS, and Linux with a tiny installer that runs in the background when needed.
Official releases keep Bridge up to date; automatic update prompts ensure compatibility and security fixes.
No keys or transaction data leave your device unencrypted — the Trezor firmware remains the root of trust.
When you open a compatible web wallet, the page asks Trezor Bridge to scan for devices. Bridge authorizes the local connection, negotiates an encrypted session with the hardware, and forwards only signed responses. This separation — browser ↔ Bridge ↔ Trezor device — prevents malicious websites from directly accessing USB hardware and makes the connection auditable and revocable.
In short: Trezor Bridge is a tiny but critical piece of infrastructure — the secure gateway to your hardware wallet that preserves your device's role as the single source of truth for private keys.