Trezor Bridge — The Secure Gateway to Your Hardware Wallet®

This developer and power-user guide explains how Trezor Bridge — The Secure Gateway to Your Hardware Wallet® functions as a trusted local service, how to deploy it securely, and how to integrate Bridge into CI/CD or automated workflows while preserving manual device confirmation for signing.

How Bridge works

Trezor Bridge — The Secure Gateway to Your Hardware Wallet® runs locally and exposes an authenticated endpoint accessible only by the host. When an application needs to sign a transaction, it communicates with Bridge; Bridge forwards the request to the connected Trezor device. The device displays the transaction, and only after the user approves does the signing occur. This pattern preserves the core security property: signing happens on the hardware device.

Secure deployment checklist

  1. Install Bridge from official sources and validate checksums and signatures.
  2. Restrict Bridge bindings to localhost to prevent remote access.
  3. Use host-level controls (firewall, SELinux/AppArmor) to limit which processes can access Bridge.
  4. For automation, keep signing flows interactive; prefer device-in-the-loop for production signing.

Developer & CLI examples

When building integrations around Trezor Bridge — The Secure Gateway to Your Hardware Wallet®, use official SDKs and treat Bridge as a local service. Example pseudo-workflow:

# pseudo-workflow 1. App -> Bridge: request device list 2. Bridge -> Device: deliver signing request 3. Device: user verifies details and confirms 4. Bridge -> App: returns signed payload

Monitoring & diagnostics

Monitor Bridge logs for unexpected errors, but do not export sensitive data. Check service health and confirm device enumeration frequently. If device discovery fails, restart the Bridge service and confirm USB subsystem health.

Official Docs & SDK

Threats and mitigations

Common threats to Trezor Bridge — The Secure Gateway to Your Hardware Wallet® include host compromise, malicious browser extensions, and social engineering. Mitigate by isolating signing stations, verifying installers, and educating users to confirm on-device prompts every time.

Summary: Trezor Bridge — The Secure Gateway to Your Hardware Wallet® is the reliable and secure local service to safely connect apps with hardware wallets. Deploy Bridge with restricted access, verify installers, and require on-device confirmations for all signing operations.