Trezor Bridge®
Trezor Suite relies on Trezor Bridge for secure device communication, ensuring trusted access to portfolio management, crypto exchanges, and token tracking.
Last updated
Trezor Suite relies on Trezor Bridge for secure device communication, ensuring trusted access to portfolio management, crypto exchanges, and token tracking.
Last updated
At first glance, a local bridge application may seem like an extra step—but it strengthens both practical security and user privacy.
Browser Sandbox Isolation
Modern browsers sandbox web pages to protect users. Direct USB access from a web page would break this model. With Trezor Bridge, only trusted code running on localhost may speak to your hardware wallet. This containment means even if a malicious website tries to call the web-USB API, Bridge will refuse unless it originates from a whitelisted context.
Encrypted Transport Bridge uses native OS USB drivers, which implement secure, low-level encryption and integrity checks. This ensures that commands sent to your Trezor device cannot be tampered with in transit.
Reduced Attack Surface Instead of embedding hardware-specific drivers in every application, Bridge centralizes USB handling. This reduces duplication of sensitive code and limits potential vulnerabilities to a single, audited codebase maintained by SatoshiLabs.
User Consent Enforcement Every time you connect, your Trezor displays a prompt asking you to allow or reject the session. Bridge cannot override this; it only acts as a messenger. Without your physical approval, no transaction or key export can proceed.
Open-Source Transparency Trezor Bridge’s source code is publicly available, allowing independent security researchers to review, audit, and propose enhancements. This community scrutiny further hardens the system and builds trust.
By understanding these design choices, you can appreciate how Trezor Bridge not only solves a technical hurdle but also reinforces the multi-layered security guarantees that hardware wallets are renowned for.
