How to Generate Strong Passwords That Hackers Can't Crack
"123456" is still the most common password in 2026. Don't be that person. Here's how to create passwords that resist brute-force, dictionary, and rainbow table attacks.
What Makes a Password Strong?
Three factors determine password strength:
- Length — Each additional character exponentially increases the number of possible combinations. A 16-character password is billions of times harder to crack than an 8-character one.
- Character variety — Using uppercase, lowercase, numbers, and symbols expands the character set from 26 to 95 possible characters per position.
- Randomness — Humans are bad at randomness. "P@ssw0rd!" looks complex but follows predictable substitution patterns that attackers know.
How Long Should a Password Be?
In 2026, with modern GPU-based cracking hardware:
- 8 characters — Crackable in hours to days.
- 12 characters — Months to years with varied character types.
- 16 characters — Practically uncrackable with current technology.
- 20+ characters — Future-proof against quantum computing.
Bottom line: length beats complexity. A 20-character passphrase of random words ("correct-horse-battery-staple") is stronger than an 8-character mess of symbols.
Generate Strong Passwords Instantly
Use SnapSum Password Generator to create cryptographically random passwords:
- Set the length (recommend 16+).
- Choose character types: uppercase, lowercase, numbers, symbols.
- Click "Generate".
- Copy and use.
The generator uses your browser's crypto.getRandomValues() API — true cryptographic randomness, not pseudo-random number generators.
Password Management Best Practices
- Use a different password for every account. Reusing passwords means one breach compromises everything.
- Use a password manager. Bitwarden (free/open-source), 1Password, or KeePass.
- Enable 2FA everywhere. Even a strong password can be phished.
- Never share passwords via email or chat. Use a password manager's sharing feature.
- Check for breaches. Use haveibeenpwned.com to see if your email appears in known data leaks.
What About Passphrases?
Passphrases are 4–6 random words strung together (e.g., "mango-telescope-quiz-notebook"). They're easier to remember and type than random characters, while being equally strong when long enough. A 4-word passphrase with a 10,000-word dictionary has 10⁶ possible combinations — stronger than most 8-character passwords.
Related Security Tools
- Hash Generator — Generate SHA-256 and other hashes.
- Base64 Encoder — Encode sensitive strings.
- UUID Generator — Create unique identifiers for API keys.