On the security side, Enzoic states that your "Password will be sent securely to our server to check if it's compromised," and it doesn't store your passwords.

If you tend to reuse passwords or haven’t changed one in years, you should assume your credentials are vulnerable and take steps to protect yourself.

In June 2007, the National Institute of Standards and Technology (NIST) released guidance that said that sites should check potential passwords against previous data breaches, in order to ensure they ...