Trezor Expands Wallet Security Features Following $100M Coldcard Exploit

Trusted Editorial content, reviewed by leading industry experts and seasoned editors. Ad Disclosure TL;DR Trezor expands wallet maximum passphrase length from 50 to 128 characters. The update follows July’s Coldcard vulnerability, which exposed weaknesses in recovery phrase generation and contributed to more than $100 million in reported losses. Strong, unique passphrases helped protect some users whose wallet backups were compromised. The new limit requires updated Trezor Suite software and compatible device firmware. Trezor Strengthens Wallet Protection With Longer Passphrases Hardware wallet manufacturer Trezor has expanded its passphrase limit to 128 characters, giving users another option for securing their cryptocurrency holdings following a series of wallet security incidents. Announced on November 1, the change increases the previous 50-character ceiling and is available through updated Trezor Suite software and compatible device firmware. Older firmware retains the original restriction. A passphrase functions as an additional layer of protection alongside a wallet’s recovery phrase. Even if an attacker obtains the recovery phrase, access to a passphrase-protected wallet re...