Question 1

How strong is my password?

Accepted Answer

Strength depends on length, character set size, and randomness. Entropy roughly equals length times log2 of the character set size.

Question 2

What length should I use?

Accepted Answer

For accounts, 12-16 random characters is a common minimum; use longer (e.g., 20+) for critical accounts or passphrases.

Question 3

Are passphrases better?

Accepted Answer

Random multi-word passphrases can be strong if generated from a large word list and spaced or hyphenated.

Question 4

Should I reuse passwords?

Accepted Answer

No—use a unique password per site and a password manager to store them.

Question 5

What about 2FA?

Accepted Answer

Enable two-factor authentication for critical accounts in addition to strong passwords.

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