Pasword manager. All important data are password protected. So it is highly important that passwords might not be cracked with least effort.
Secure password should have a minimum length of 8 characters, they should consist of lowercase and uppercase characters as well as of numerics and special chars. But these passwords are difficult to remember. The consequence is that we tend to use simple and short passwords.
Often prenames of family members etc. But such passwords are easy to encrypt.