Bip39 Compatible Wallet. Because of the cryptographic structure of BIP-39, a weak passphrase isn't going to reduce the security of another wallets or help expose the seed words. In the event you ended up to reveal your seed phrase under duress, your concealed wallets would remain safe and unfamiliar. From https://mysitesname.com/story8402276/bip39-passphrase-https-linktr-ee-bip39-bip39-words-an-overview