Learn what makes a password strong, how to create one using best practices, and how to manage passwords safely without writing them down.
Guide étape par étape
Use at Least 12 Characters
Length is the single most important factor. A 12-character password takes billions of times longer to crack than an 8-character one. Aim for 16+ characters for accounts that hold financial or personal data. Length beats complexity every time.
Mix Character Types
Use all four character types: uppercase letters (A–Z), lowercase letters (a–z), numbers (0–9), and symbols (!, @, #, $, %, etc.). A strong password mixes all four: `Tr0ub4dor&3` is weak due to predictable substitutions; truly random mixing like `k#9mPqL!2vBx` is far stronger.
Avoid Predictable Patterns
Do not use dictionary words, names, birthdates, or keyboard patterns (qwerty, 123456). Do not substitute letters with obvious symbols (a→@, e→3, o→0) — attackers include these in dictionary attacks. Never reuse passwords across sites.
Use a Password Generator
The most reliable method: use a trusted password generator that creates cryptographically random strings. Our Password Generator lets you choose length and character types and generates a unique password instantly — no patterns, no predictability.
Store Passwords Safely
Never write passwords on paper or in plain text files. Use a reputable password manager (Bitwarden, 1Password, Dashlane) to store, autofill, and sync passwords securely. Enable two-factor authentication (2FA) on all important accounts as an extra layer.
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Questions fréquentes
Q: How often should I change my passwords?
A: Current guidance (NIST 2024) recommends changing passwords only when there is reason to believe they have been compromised, not on a fixed schedule. Regular forced changes often lead to weaker passwords (e.g., "Password1!" → "Password2!"). Use a strong password and change it if there is a breach.
Q: Is a passphrase more secure than a random password?
A: A long passphrase (e.g., "correct-horse-battery-staple") can be very secure and is easier to remember. Four random common words at 5 characters each give about 50+ bits of entropy. However, for most online accounts, a password manager + random generated password is the strongest option.
Q: What is two-factor authentication and should I use it?
A: 2FA requires a second proof of identity beyond the password (e.g., a code from an app like Google Authenticator). Even if your password is stolen, 2FA prevents access. Always enable it on email, banking, and social media accounts.