What makes a password strong
Strong passwords are usually long, random, and unique to one account. Length matters because it expands the search space. Randomness matters because predictable patterns such as names, years, and keyboard sequences are easy to guess. Uniqueness matters because reused passwords turn one breach into many account compromises.
What a password generator does well
A generator is useful because people are bad at inventing randomness manually. A proper generator creates values that are harder to predict than human-made passwords. That is why generated passwords are a better default for new accounts, temporary credentials, and sensitive internal systems.
Generation is only one part of security
- Use a password manager so you do not need to memorize many long random strings.
- Enable multi-factor authentication where possible.
- Do not reuse generated passwords across services.
- Do not store passwords in plain text documents, screenshots, or chat messages.
When testing password rules
If you are validating a password policy in software, test more than just one ideal example. Include long values, symbols, edge lengths, and combinations that meet some rules but not others. A generator helps create many realistic test cases quickly.
FAQ
Are symbols always required?
Not always. Long random passwords without symbols can still be strong, but the exact requirement depends on the system policy and threat model.
Can I just change one character in an old password?
That is usually a weak improvement. It is better to create a completely new unique password.