Password security isn't one big decision — it's a set of small habits that add up. Get the fundamentals right and most common attacks simply don't work against you. Here's the complete, practical checklist, organized by what matters most.
1. Length beats complexity
A longer password is almost always stronger than a shorter, more "complex" one. A 16-character password made of random words is harder to crack than an 8-character password full of symbols, because every extra character multiplies the number of possible combinations an attacker has to try. Aim for at least 12 characters on any account, and 16 or more on anything sensitive like email or banking.
2. Never reuse a password
This is the single most important rule on this list. When one site suffers a data breach, attackers immediately try those exact username-and-password combinations on other popular sites — a technique called credential stuffing. If you reuse a password, one breach anywhere can compromise accounts everywhere. Every account needs its own unique password, generated independently.
3. Use true randomness, not patterns
Passwords like Summer2024! or Password123 follow predictable human patterns that cracking tools are specifically built to test first. A password generated by a random algorithm — one that doesn't spell anything or follow a keyboard pattern — is exponentially harder to guess, even if it's the same length. Use a password generator instead of typing something memorable yourself.
4. Turn on two-factor authentication (2FA)
Even the strongest password can be exposed through phishing or a breach. Two-factor authentication adds a second layer — usually a code from an app or a physical security key — so a stolen password alone isn't enough to get into your account. Enable it on your email, banking, and any account that offers it, prioritizing app-based or hardware-key 2FA over SMS codes where possible.
5. Store passwords in a password manager, not your memory
Trying to remember dozens of unique, random passwords is unrealistic — which is why people fall back on reuse and weak patterns. A password manager solves this by generating and storing strong passwords for you behind a single master password, so you only ever have to remember one thing.
6. Watch for phishing attempts
No password strategy protects you if you type your password into a fake login page. Always check the URL before entering credentials, be suspicious of urgent emails asking you to "verify your account," and never click login links from unexpected emails — type the site's address directly instead.
7. Update passwords after a breach — not on a fixed schedule
Older advice recommended changing passwords every 90 days regardless of circumstances. Current guidance from security professionals favors a different approach: keep a strong, unique password indefinitely, but change it immediately if the account is involved in a breach, if you suspect it's compromised, or if you shared it with someone who no longer needs access.
Quick checklist
- At least 12–16 characters, longer for sensitive accounts
- Fully random — no patterns, dictionary words, or personal information
- Unique per account — never reused anywhere
- Two-factor authentication enabled wherever available
- Stored in a password manager, not memorized or written down insecurely
- Changed immediately after any breach notification
None of this requires memorizing complicated rules — it just requires using the right tools. Generate a strong password now with our free Password Generator, and check any existing password's strength with our Password Strength Checker.