Unbreakable passwords are at least 16 characters long, mix upper- and lowercase letters, have numbers, and use several symbols. A good example of a strong, random password is: P03$cEw^b7gH@uY!2 Most of all, you should never reuse your password. Because even if a password is strong, it can be cracked if it’s reused for multiple accounts. If one of your accounts gets hacked – say, your Facebook password gets leaked due to a breach of Facebook itself – any other accounts that use that password are at risk of getting hacked. You should always generate a unique, strong password for every account you already have or create. The LastPass password generator makes that an easy task.