Passphrase
A sequence of random words used as a password. Passphrases are typically longer and easier to remember than complex passwords while still being highly secure.
A passphrase is a password composed of multiple words, typically 4-6 randomly selected words, sometimes with separators. For example, “correct-horse-battery-staple” is far more secure than “P@ssw0rd!” despite being easier to remember.
The security of a passphrase comes from its length and the randomness of word selection. A 5-word passphrase from a 7,776-word dictionary (Diceware) has ~64 bits of entropy: sufficient for most purposes. Adding a random number or symbol increases entropy further.
Passphrases are ideal for master passwords (which must be memorable) and for situations where a password manager can’t autofill. For all other credentials, a password manager should generate fully random strings.
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