Secure Password: 10 Tips for Uncrackable Passwords
A secure password is a random combination of letters, numbers, and special characters that is at least 12 characters long and has no connection to personal data. Security authorities define secure passwords as the most important technical safeguard for digital accounts.
Why Most Passwords Are Insecure
According to security researchers, the most commonly used passwords year after year are the same: 123456, password, 123456789, 12345678, and similar. These are cracked in fractions of a second through dictionary attacks or by testing known default passwords.
The 10 Most Important Tips for a Secure Password
Tip 1: At Least 12 Characters – 16 or More Is Better
Length is the most important factor for password security. Each additional character increases the number of possible combinations exponentially:
| Length | Character Set | Time at 10B/sec |
|---|---|---|
| 8 characters | Upper+Lower+Numbers | Minutes |
| 12 characters | + Special characters | Years |
| 16 characters | + Special characters | Billions of years |
Tip 2: Combine All Four Character Types
A secure password contains lowercase letters (a–z), uppercase letters (A–Z), numbers (0–9), and special characters (!@#$%). Combining all four types increases the character pool from 26 to over 90 – making dictionary attacks practically impossible.
Tip 3: No Personal References
Attackers know your publicly available data from social networks. Avoid using: names, birthdays, anniversaries, pet names, employer or city names.
Tip 4: No Dictionary Words
Dictionary attacks automatically test all known words – including variations like "P@ssw0rd". Even creative substitutions are well known and accounted for in attacks.
Tip 5: Every Account Needs Its Own Password
Credential stuffing turns a single stolen password into a master key for all your accounts. A password manager makes unique passwords practical.
Tip 6: Check Regularly, Don't Change Compulsively
Current security guidelines recommend no longer changing passwords on fixed schedules – only when there are signs of a compromise. Check your email address regularly on haveibeenpwned.com.
Tip 7: Never Write Down Passwords
A password on a sticky note by your monitor is not a secure password – regardless of its complexity. Use a password manager instead.
Tip 8: Use a Password Manager
With a password manager, you only need to remember one single, very strong master password. All others are stored encrypted and filled in automatically. Recommendation: Bitwarden (free, open source).
Tip 9: Enable Two-Factor Authentication
Even the strongest password can be stolen via phishing or malware. With two-factor authentication (2FA), a second device is required to log in – attackers fail even with the correct password.
Tip 10: Use a Password Generator
Instead of inventing weak passwords yourself, let a password generator do the work. Randomly generated passwords are demonstrably more secure than human-invented ones.
Secure Passwords You Can Actually Remember
For passwords you truly need to memorize (e.g., your password manager's master password), security experts recommend the passphrase method:
Example: Coffee-Satellite-Drum-Neptune
32 characters long, easy to remember, yet very strong due to its randomness.
Common Mistakes and How to Avoid Them
| Mistake | Risk | Solution |
|---|---|---|
| Same password for multiple accounts | Credential stuffing | Password manager + generator |
| Passwords that are too short | Brute-force in minutes | At least 16 characters |
| Word + year | Dictionary attack | Use random password |
| Saving passwords in the browser | Device theft | Dedicated password manager |
| Password hint with real info | Social engineering | No hint or a meaningless one |
Conclusion: Security Through Combination
No single tip is enough – but the combination of long, random passwords, a password manager, and enabled two-factor authentication reliably protects your accounts against the most common attack methods.