A calculating attacker manages to obtain the password digest from a department store. The attacker then proceeds to engage in a type of attack known as credential stuffing. How can you protect yourself against this type of attack?

a$.$ Do not use a password that contains characters or patterns similar to the username.

b$.$ Do not use a password that can be uncovered by a mask based on statistical analysis.

c$.$ Change your password at least once a month.

d$.$ Do not use the same password on multiple accounts.