Bip39 Standard. In addition, BIP39 defines the passphrase solution, that adds a reasonable quantity of additive security just in case your seed phrase is stolen or if not accidentally uncovered. Having said that, In addition it provides some threat, so it is recommended For additional knowledgeable people. BIP39 Passphrase Wallet https://thedeepdirectory.com/listings13097330/bip39-wallet-https-linktr-ee-bip39-rumored-buzz-on-bip39-standard