What makes a password strong
Strength comes from unpredictability and length. Every extra random character multiplies the number of guesses an attacker must try, so a long password is exponentially harder to crack than a short clever one. Randomness matters too — a password built from unrelated words or characters resists the dictionaries and patterns attackers use first. The measure people cite is entropy, roughly how many bits of surprise the password contains.
Why length beats complexity
A password like "Tr0ub4dour&3" looks complex but is only 12 characters and follows a predictable pattern, so cracking tools handle it quickly. A passphrase like "correct-horse-battery-staple" is longer, all lowercase, and far harder to break because its length dominates the math. Complexity helps, but length wins. Aim for 16 or more characters when you can.
When you need a strong one
- Email and banking — the keys that unlock everything else.
- Work and admin accounts where one breach spreads.
- Any account with saved payment details.
- New signups where the default you pick gets reused elsewhere.
- After a breach notice for any service you used.
How to create one well
Use a generator that produces random characters or word combinations, not one you invent by hand — human-chosen passwords carry patterns. Make it long, unique to that account, and never a reused favorite. Store it in a password manager so you do not have to remember it, and turn on two-factor authentication where offered. The generator should run locally so the value is never transmitted.
A step-by-step method
- Open a browser-based generator that creates values on your device.
- Choose length of 16+ characters, or 4+ random words.
- Generate and copy — do not type a pattern you invented.
- Save it in a manager so each account gets a unique value.
- Enable 2FA on the account as a second line of defense.
A worked example
| Password | Entropy | Verdict |
|---|---|---|
| 123456 | Very low | Broken instantly |
| Tr0ub4dour&3 | Low-Mid | Cracked fast |
| correct-horse-battery-staple | High | Strong |
| 7Kq!m2$vNp9@wLxZ | Very high | Strong |
Common shapes compared
| Type | Strength | Use case |
|---|---|---|
| Passphrase | High, memorable | Primary accounts |
| Random string | Very high | High-security |
| Pattern | Weak | Avoid entirely |
A quick scenario: a small business owner
A small business owner uses one password everywhere because it is easy to remember. After a newsletter service he uses is breached, the same password unlocks his email and bank. He switches to a browser-based generator that creates a unique long value per account, stores them in a manager, and turns on 2FA. The next breach elsewhere costs him nothing, because that password opened nothing else.
The change takes an afternoon and removes his biggest risk. Over the following months he stops dreading "another login to remember" because the manager handles it, and every account now has a value no human — and no attacker's dictionary — could guess.
Common mistakes
The worst mistake is reusing one password across accounts, so a single breach cascades. Another is trusting a "clever" pattern like "Summer2026!" that attackers try early. A third is writing passwords on a sticky note or in an unencrypted file. Finally, using an online generator that uploads the value to a server defeats the purpose — the site then knows your password, which is the one thing it should never see.
Who should use it (and who shouldn't)
Everyone with an online account should use strong, unique passwords; there is no exception worth the risk. The only "shouldn't" is relying on memory alone for many of them — use a manager. And for anything sensitive, prefer a generator that runs locally so the value is never transmitted.
How it fits a security toolkit
Glint's password generator creates values in your browser and never uploads them. Pair it with the API-keys guide for handling credentials safely, and the password strength guide for understanding the math behind a good value. All are free with no signup.
Frequently asked questions
What is the strongest kind of password? A long random passphrase — 4 or more unrelated words or 16 plus random characters.
Is a password manager enough? It helps you store unique strong passwords; you still need to generate them well.
Should I include symbols? They help but length matters more; do not sacrifice length for a symbol.
Why avoid reusing passwords? One breach then unlocks every account that shares it.
Is the Glint generator free with no upload? Yes. It runs in your browser and never sends the value anywhere.