Trezor Raises Its Passphrase Limit to 128 Characters After…
By Tobi Opeyemi Amure
AI summary of the source article
Trezor has expanded its maximum wallet passphrase length from 50 to 128 characters for several devices following Coldcard wallet thefts. The change was shipped in the October Trezor Suite update.
Why it matters
Trezor "names the Coldcard thefts as the reason" for increasing the limit, though testing candidate passphrases under BIP-39 "costs almost nothing, so protection scales with how much genuine randomness the passphrase carries rather than how many characters it runs to."
Key facts
- Trezor increased its passphrase limit from 50 to 128 characters on the Model T, Safe 3, Safe 5, and Safe 7, while the Model One remains capped at 50.
- Trezor cited Coldcard firmware flaws dating back to March 2021 that produced weak, guessable seeds as the reason for the change.
- The October Trezor Suite release also added Arc accounts for USDC on Circle's layer-1 network, Stellar Soroban token support, Cardano sending on mobile, and CSV export of trade history.
Source excerpt · FinanceFeeds
Trezor has lifted the maximum length of a wallet passphrase from 50 characters to 128, and it names the Coldcard thefts as the reason. The change shipped in the October Trezor Suite update, announced on 1 November by senior content marketer Henry Windle. Trezor’s reasoning holds, but the dates in its account do not, and the defense it is extending is weaker than a bigger number suggests. The Ceili…