Weak passwords are a huge problem, one that almost everyone is guilty of. Even if you think of yourself as being a diligent, security-minded person, you probably have at least one or two passwords that are common words, followed by a digit or two, followed by an exclamation point.
I’d be willing to bet that the digits in your password represent either your birthday, your anniversary, or your favorite football player’s jersey. With a little time, anyone could gain access to your account. That’s where two-factor authentication comes in.