Bip39 github https://www.symbaloo.com/mix/bookmarks-xfkm A BIP39 seed phrase created with suitable randomness can not be guessed by brute force, since you can find just too many permutations. Simply because adding a passphrase to your seed words produces a different wallet, every other passphrase you enter (which include a passphrase entered improperly) https://socialwebnotes.com/story5761070/bip39-docs-the-fact-about-bip39-word-list-github-that-no-one-is-suggesting-https-linktr-ee-bip39