Bip39. Because of the cryptographic style of BIP-39, a weak passphrase does not reduce the safety of one other wallets or help expose the seed words. Of course, BIP39 passphrases are circumstance-delicate. Ensure that you enter your passphrase particularly when you set it up, including any uppercase or lowercase letters. https://bookmarkcork.com/story20180321/bip39-wallets-https-linktr-ee-bip39-how-much-you-need-to-expect-you-ll-pay-for-a-good-ian-coleman-bip39