Bip39. Due to the cryptographic design of BIP-39, a weak passphrase would not reduce the security of another wallets or support expose the seed words. BIP39 can be a design implementation that lays out how copyright wallets build the list of words (or "mnemonic codes") which make up a mnemonic https://mylittlebookmark.com/story4645671/bip39-words-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work