A Key That Holds
A password is a key. Some keys take seconds to copy. Some take longer than the universe. Learn the difference.
The guess list
A guesser does not start random. It starts with the most common passwords ever leaked, millions of them, and tries those first. Press the button.
Build a key that holds
Type a password and watch the guesser's clock. Try the examples too.
The four rules pros use
1. Long. Aim for a passphrase: a few random words, like river-purple-engine-cloud.
2. Unpredictable. No real names, birthdays, or common words. The guesser knows those.
3. Different everywhere. One password per site. If one leaks, the rest stay safe.
4. Let a tool remember. A password manager makes and stores long ones, so you do not have to.
← Defense Range · the clock assumes a fast thief guessing a billion tries a second