Ledger Bip39 Passphrase Just one illustration of manually generating entropy will be flipping a coin. But if an attacker gives you a coin that may be weighted a little in favor of heads, your First source of entropy will have been corrupted. They do not keep right personal data, but https://binksites.com/story8357931/bip39-how-many-combinations-the-best-side-of-bip39