What Actually Makes a Password Strong in 2026

For years, password advice focused on forcing complexity: a capital letter, a number, a symbol, changed every 90 days. Modern guidance from security researchers has shifted toward a simpler principle — length and uniqueness matter far more than arbitrary complexity rules.

Why length beats complexity

Every additional character in a password multiplies the number of possible combinations an attacker has to try. A long, random password is dramatically harder to brute-force than a short one stuffed with symbols, even if the short one looks more "complex" at a glance.

Uniqueness matters more than you think

Reusing a password across multiple sites means a breach at one service can expose your account everywhere else. A password manager makes it realistic to use a different, long, random password for every account without having to memorize them.

Avoid predictable patterns

Substituting "a" for "@" or adding "123" to the end of a familiar word is a pattern attackers already account for in modern cracking tools. A truly random string of characters is far more resistant than a modified dictionary word.

Two checks worth running

Before you save a new password, it helps to generate something genuinely random rather than inventing it yourself, and then sanity-check its strength. Try our Password Generator to create one, and our Password Strength Checker to evaluate an existing one — both run entirely in your browser, so nothing you type is ever transmitted.