@hero333 I understand what you mean :D There are 2²⁵⁶ different combinations for a private key. This number is greater than the number of atoms in our universe. And it's extremely unlikely that you'll ever find one that has Bitcoin on it by trial and error. I'm not aware of any case where this has ever happened. I think they will try the private keys directly and not the words. So the passphrase does not protect against this as far as I know - but a multisig wallet does :)
