Password Security

How do I create a strong password?

By Bridget · Updated May 2026 · Reviewed by Locket Security Team

★   the short answer

A strong password is long (at least 16 characters), unique to one account, and random. The easiest way to hit that is a password manager that generates random strings for you. If you must memorize one — like your master password — use a passphrase of four or more unrelated words, which is both long and easy to recall.

What actually makes a password strong?

Length and unpredictability matter most — a 16+ character password is exponentially harder to crack than a short one, even a complex short one. Uniqueness is just as important: a strong password reused on a breached site is no longer strong. Randomness beats clever substitutions like “P@ssw0rd,” which attackers expect.

How does the passphrase method work?

Pick four or more random, unrelated words — like “copper-violin-meadow-trophy” — and you get a password that's long, memorable, and very hard to guess. It's ideal for the few passwords you must type from memory, such as your password-manager master password or your laptop login.

How do I remember a unique password for every account?

You don't — that's the password manager's job. It generates and stores a random password per account, so you only memorize one strong master passphrase. This removes the temptation to reuse or weaken passwords just so you can recall them.

Frequently asked

No. Modern guidance says forced rotation leads to weaker, predictable passwords. Change a password only when it's strong, unique, and either reused or possibly exposed in a breach.

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