to be extra secure, consider including a newline, null byte, or bell character in your password or passphrase
Exactly what I came here to say @joernsmock. Long strings of random characters are no harder for computers to guess than equally long strings made up of dictionary words. Epecially obscure or non-English words.
Claiming they are is a sales pitch for password managers vendors, not a security fact. Current passphrase advice reflects that XKCD comic, and suggests passphrases be long, memorable, and changed as infrequently as possible.


