Strong Passwords in 2026: A Short Checklist for Real Humans
Length vs complexity, password managers, MFA, and how to test strength without sending secrets to a server.
Password rules like “one uppercase, one symbol” made sense when attackers tried a few thousand guesses. Today, credential stuffing (reusing leaked email/password pairs) and offline hash cracking dominate. Modern guidance favors long, unique secrets and a second factor—not clever short passwords.
Length beats “clever”
A random four-word passphrase with a separator (e.g. correct-horse-battery-staple style, but randomly chosen) or a 20+ character password from a generator is harder to crack than P@ssw0rd!1 which appears in every breach list.
The best password is one you never reuse and never memorize for dozens of sites—use a password manager.
Password managers
- Generate unique passwords per site.
- Store TOTP seeds or passkeys where supported.
- Protect the vault with a strong master password and device security.
Multi-factor authentication (MFA)
SMS codes are better than nothing but vulnerable to SIM swap. Prefer authenticator apps or hardware keys (WebAuthn/FIDO2) for high-value accounts (email, bank, domain registrar, cloud admin).
Testing strength locally
“Strength meters” that upload your password to a server are a non-starter. Use tools that run entirely in your browser and never transmit the secret.
Our Password Generator creates random strings you can tune for length and character sets, and the Password Strength Checker evaluates entropy-style signals client-side so your candidate password stays private.
For developers storing passwords: never ship plaintext. Use slow hashes (Argon2, scrypt, or bcrypt) with per-user salts. The Hash Generator is handy for checksums and HMAC concepts, not for production password storage—use vetted libraries in your stack instead.
What users should actually do
- Turn on MFA for email and financial accounts.
- Use a password manager; let it generate 20+ character passwords.
- Revoke access when employees or contractors leave; rotate secrets that were shared in chat.
- Watch for breach notifications and change only affected passwords (or rely on manager-generated uniqueness).
Good habits scale better than perfect memory—and they pair well with the free tools above when you want quick, offline-friendly help.