Guide
Password Hygiene: How to Create, Store, and Manage Secure Passwords
A practical guide to password security — generating strong passwords, using password managers, enabling 2FA, and avoiding common mistakes.
By alex-chen· Published August 1, 2026 · Updated August 7, 2026
Why Password Hygiene Matters
Compromised passwords are the leading cause of account takeovers and data breaches. The 2024 Verizon DBIR found that over 80% of hacking-related breaches involved stolen or weak credentials. A single reused password across multiple sites turns one breach into a cascade of compromises — attackers use credential stuffing to test stolen email/password pairs against hundreds of services automatically. The goal isn't perfect security; it's making your accounts expensive enough to attack that attackers move on.
What Makes a Password Strong
Length matters more than complexity. A 16-character lowercase passphrase (e.g., 'correct-horse-battery-staple') is stronger than an 8-character complex string like 'P@ssw0rd!'. NIST SP 800-63B recommends: minimum 8 characters, no arbitrary complexity requirements (no forced uppercase/numbers/symbols), no password expiration without evidence of compromise, screening against known breached passwords. Use a passphrase of 4-6 random words, or a 20+ character random string from a generator.
Use a Password Manager
The human brain cannot remember unique strong passwords for dozens of sites. A password manager (Bitwarden, 1Password, KeePass, or browser built-in) generates, stores, and autofills unique passwords per site. You only need to remember one master passphrase. Enable biometric unlock where available. The master passphrase should be 20+ characters and stored offline (paper in a safe).
Enable Two-Factor Authentication (2FA)
2FA adds a second factor (something you have) beyond the password (something you know). Ranked by security: 1) Hardware security keys (YubiKey, FIDO2) — phishing-resistant, 2) Authenticator apps (TOTP: Google Authenticator, Authy, Bitwarden) — time-based codes, 3) SMS/email codes — vulnerable to SIM swap and interception, 4) Backup codes — store offline. Enable 2FA on email, banking, GitHub, cloud providers, and any service offering it.
Check for Compromised Credentials
Regularly check if your emails/passwords appear in known breaches using Have I Been Pwned, Firefox Monitor, or your password manager's built-in breach monitoring. If a password appears in a breach, change it immediately on that service and anywhere you reused it. This is the single highest-impact action after a breach notification.
Common Mistakes to Avoid
Reusing passwords across sites; using personal info (birthdates, pet names); incremental passwords (Password1, Password2); sharing passwords via email/chat; storing in spreadsheets; disabling 2FA because it's 'inconvenient'; ignoring breach notifications.
Password Generator
Generate strong, random passwords with configurable length and character sets. Cryptographically secure.